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Frequently Asked Questions

TV Listening Devices
IR Transmitter
Car Headphones Compatibility
IR Car Headphones
TV Listening Devices
Can these be used with a pacemaker?
The 2.4GHz wireless TV listening devices are not recommended for pacemaker carrier. If you have a pacemaker or other medical device, we suggest you to consult your physician or the technical specialist department of your pacemaker brand for certainty. 
However, our infrared wireless TV headphone SM-863D, voice enhanced wired TV headphone SM-905TV, clear voice wired TV speaker SM-961 are available for you.
What distance do these infrared wireless TV headphones work?
Most infrared devices have a range of 8 meters (25 feet), the optimal range for SIMOLIO wireless IR headphone SM-863D is about 15 meters (40 feet in direct line-of-sight without obstacles).
Any noticeable lag?
No lip-sync delay. All SIMOLIO 2.4GHz wireless TV listening devices (headphones & speakers) provide <30ms of audio latency, compared to the 200ms+ of typical Bluetooth solutions on the market. This ensures that your audio and visual will always be perfectly synchronized.
Will these 2.4G wireless headphones sync up with the tv dialog with no delay?
Slight latency is a common phenomenon in RF wireless transmission product. We use the latest 2.4GHz technology with latency between 20 ~ 30 milliseconds (ms), which is undetectable and far superior to Bluetooth in terms of audio synchronization.
How does the "MIC" button on the TV headset work?
When you want to hear the person next to you, you only need to press the "MIC" button once, the TV sound in the headset will be paused and your surrounding dialogue will be amplified.
Is the under-the-chin headset adjustable?
Yes, we use durable materials at the headset arms for adjusting to more comfortable shape.
Can a second headset be added to the SM-824D1?
Yes, the 2.4G wireless TV listening headphone system supports multiple headphones working at the same time. You just need to connect one transmitter to your TV. Find the addition headset here: https://www.amazon.com/SIMOLIO-Additional-Headphone-Replacement-Listening/dp/B07NXXQHW5
What is the product warranty?
Simolio offers a 12-month limited warranty for brand-new purchases from authorized sellers. Lean more: https://www.simolio.com/pages/warranty-returns
Can I use these TV earphones when laying in bed?
I would assume so. It would easily lay on ones chest while lying down.
Can you go into another room and still hear the TV?
Yes, for RF 2.4GHz wireless TV listening device, the effective distance is up to 100ft/30m. Its signal can pass through the wall and ceiling; therefore, if you still want to listen to your favorite music/ programs while walking around (cooking or working on the lawn and etc.), undoubtedly, the 2.4GHz RF wireless TV headphone/ speaker is your best choice.
Can others listen from TV speaker?
It depends on whether your TV supports simultaneous audio output, if yes, others can hear from the TV speaker. If not, you can choose our SM-828 or SM-829 series and use their transmitter's bypass function to bypass an external speaker/home stereo system. Here are the solutions with by-pass for your reference: 

SM-828D1: https://www.amazon.com/SIMOLIO-Headphones-Wireless-Watching-Clarified/dp/B0B8CY1MJ4
SM-828D2: https://www.amazon.com/SIMOLIO-Wireless-Headphones-Watching-Charging/dp/B0B8DC9QT7
If you have a sound bar do you need a splitter for the sound to function?
The “By-pass” feature of SIMOLIO SM-828D and SM-829D series allow them to work TOGETHER with your existing soundbar or stereo AV Receivers while sharing the same audio output port on TV, so that you can hear the TV at your own volume through the headphones while your family/friends listen through the speakers.
Does the IR headphone have to be pointed to the base unit?
The infrared diodes on the transmitter must be in direct line-of-sight with the headset for best performance. There cannot be anything blocking the direct signal, otherwise there will be no audio received and no sound heard. This is limitation of the IR system type, not the product itself.
Why do these TV headphones only work on one side?
1. Check and make sure that the BAL button is set in the middle position.

2. Make sure the audio cable is plugged firmly and in place.

3. Please check your TV settings to see if the TV audio is set to "MONO". Also please check the red and white ends of the TV's RCA audio output jack to make sure they are working properly.

4.    A: If the problem persists, please press the MIC button (if applicable) to see if only one side can be heard in the personal sound amplification mode.

      B: Or if it is a headphone with an AUX port, you can try using the provided AUX cable to connect the headphone directly to the audio device to see if both sides are working properly.

And please feel free to email us at support@simolio.com, we will provide you with a satisfactory solution according to your troubleshooting.
How long does it take to charge the new headphones?
Generally, it will take about 3~4 hours to fully charge.
Does this headphone SM-828D2 have bass and treble adjustments?
Yes, and other models that support TONE adjustment (treble/normal/bass) are the SM-823 Pro, SM-823D Pro, SM-824D1, SM-824D2, SM-863D, SM-8245, SM-825D Pro and SM-828D1.
Can you leave the SIMOLIO wireless headphones for TV turned on while recharging, or does that harm the batteries?
The headphones will automatically shut off when placed on charging stand. No need shut them off or disconnect anything, and it won't do any harm to the batteries.
Can this portable TV speaker be left plugged in all the time?
We do not recommend charging the speaker while using it to avoid swelling the battery. If an AC adapter is used to power the speaker, the battery can be removed.
Connected with optical cable and no sound Solutions?
In order for the SIMOLIO to work with the digital connection, the device (TV, Blu-ray, DVD, Cable/Satellite) must be transmitting the sound using PCM format. If you get no sound through the headset/speaker, then the other setting "Dolby Digtial" is most likely set on your TV or cable box. If this is the case the SIMOLIO will not work. Some TVs and other devices have the option to switch this setting. Please make sure your TV HDMI ARC port is not connected. And Start your Netflix/Aamzon Prime Program first before change to PCM. You would have to consult the device's (TV or cable box etc.) manual. This setting normally be found in the AUDIO OUT or Advanced Audio Section of the menu/settings on the device (TV or cable box etc).
Still need help? Please email us at support@simolio.com and tell us the brand and model number of your TV.
Why there is no sound under optical connection?
What you are experiencing is an incorrect audio format in Netflix and/or your TV, rather than an issue with our audio system. 

1. Make sure your TV HDMI ARC port is not connected.
2. Please check your Netflix app audio options. Start your Netflix/Aamzon Prime Program first before change to PCM. If surround sound (5.1) is selected, try changing it to Stereo (PCM) instead. 
Additionally, please update your TV's audio settings to PCM. Instructions can be found here: 

If you are still having issues, please reach out to us via support@simolio.com, we will be happy to assist you.
Do I need to turn the base or receiver off after shutting off the TV?
When no audio signal is detected, the base will turn into standby mode after 5~7 minutes, and the receiver will turn itself off within 5 minutes after the base go into standby mode.
What happens if I forget to turn the receiver off?
The receiver (headphone or speaker) will turn itself off 10 minutes if no audio is received from the transmitter base. To use it again, turn the ON/OFF switch Off and then to On again.
How to clean the ear tips?
To clean the silicone ear tips:
* Carefully remove the ear tips from the headset.
* Clean the ear tips with warm soapy water and rinse thoroughly.
* Dry the ear tips.
* Put the ear tips back on the receiver.
Which type of technology should I choose, Infrared (IR) or Radio Frequency (RF)?
Whether you choose a headset that uses RF technology or IR technology depends on how you are going to be using the headphones. 
  • If you are planning on only using the headphones to watch TV while you are in view of the TV and don’t plan on moving around, you should look at headphones that use IR technology. They are the best choice for situations such as court proceedings that require confidentiality or residential complexes where there might be high wireless usage and will have the least amount of interference from other devices.
  • If you are going to use the headphones while moving around your house and still want to hear the TV, hi-fi system or radio, then RF headphones are the best option (Model: SM-823D Pro, SM-824D1, SM-824D2, SM-825D Pro, SM-8245, SM-828D1,SM-828D2, SM-829D1, SM-829D2). The RF signal can go through walls and ceiling, so they tend to be good options if you move around a lot and still want to keep listening while in another room.
Can I have two sets of SIMOLIO infrared wireless TV headsets in the same house?

Yes, you can have two sets of SIMOLIO infrared wireless TV headphones (model number is SM-863D) in the same house. If two sets of SIMOLIO are to be used on the same TV, only one base is needed to be connected to the TV. The second base in such case only serves as a charging dock for the second headphones.

Can I purchase two sets of SIMOLIO 2.4GHz wireless TV headphones? One for upstairs bedroom use, one for downstairs.

If two sets of SIMOLIO 2.4GHz wireless TV listening headphones are used at the same time in the same house, please make sure two bases are at least 10 meters away from each other. Otherwise, one headset may pick up the sound from the other base, or there may be bad sound.

If there is nothing that can be changed about the distance, please switch on the base first, take the headset close to the base, then turn on the headphones.

Or as an alternative solution, you can purchase one SIMOLIO 2.4GHz headphones, one SIMOLIO infrared TV headphones for bedroom use. With one 2.4GHz set and one infrared set, you do not need to worry about distance or interference problem at all.
How to use 2 set SIMOLIO 2.4GHz wireless headphones for TV watching

SIMOLIO wireless TV headphones. Why they are not working/no sound?

A:  If SIMOLIO wireless TV headsets do not work in your case, or if there is no sound coming from the earphones or speaker, please take the following steps:

  1. Make sure the connected ports on your TV is proper and working.TV Lsitening Devices Compatibility
  2. Make sure power cords and audio cable are functioning and are firmly connected.
  3. Restart the BASE and the HEADPHONES. Both BASE and HEADPHONES should show solid GREEN LED after reboot, indicating that they are well connected and that audio signal is being transmitted properly.

B:  If the green LED on the BASE flashes slowly after the base is restarted, there is no valid signal into the transmitter. Then


  1. Re-check the connection between the base and the TV
  2. Re-check the volume level on TV and TV box. Normally volume on TV/TV box should be set to around 30%-40%.
  3. Make sure the transmitter base is at least 4 feet away from smart TV/TV box/wifi router/other electronic devices that run on 2.4GHz radio frequency. Or simply, you may try the base at a different location or try the base on another TV/phone/iPad/PC, or any compatible audio device.
  4. Re-check that proper TV audio out ports are used. For example, if you are connecting with red and white RCA cable, make sure the red and white ports on the TV are labeled “AUDIO OUT” or “OUTPUT”. Any red and white ports labeled with “COMPOSITE IN””VIDEO IN””COMPONENT IN” are improper.TV Listening Davices RCA

C:  If the green LED remains solid green after the system is restarted, then


Check your TV setting (PCM setting and TV Sound out setting)
         If you are connecting to TV with optical fiber cable, make sure TV’s optical audio out is set to PCM/LPCM.

         For some Samsung models, set the Sound out to “external speakers”.     
SIMOLIO TV Listening Devices TV Setting
2. If you are connecting to TV with RCA or AUX cable, you can use a wired headset to test if there is sound coming out from the port you are using.

For some Samsung models, set the Sound Out to “external speakers” when you are connecting with RCA cable; set the Sound Out to “Headset” when AUX is what you are connecting to.
 

If above tips do not work, contact your TV manufacturer and ask how to get sound out of the audio port? For further assistance, email to market@simolio.com.
Audio cuts in and out, intermittent sound, choppy, how should I fix this?
If you experience the above mentioned problem, try following tips to solve the issue:

Method 1: Check the volume level on your TV/TV-related box. 

Sufficient volume level from TV/TV-related box is required for stable signal output to the transmitter. If volume is set low on your TV, or TV box, or both of them, signal transmission to the base and headphones becomes intermittent or choppy. Generally we would recommend an average TV and TV box volume of 30%-40%.

Method 2: Rule out any possible source of wireless interference. 

Wireless signals around the transmitter base can have negative impacts on the wireless working range of SIMOLIO headphones for TV watching. The so-called source of wireless interference includes smart WiFi TV, TV Box, home appliances like microwave oven, or other 2.4GHz and Bluetooth devices transmitting on 2.4GHz band.

Method 3: Remove or avoid physical obstacles.

While SIMOLIO 2.4GHz TV hearing device can carry audio signals beyond walls, ceilings, or human bodies, actual working range will be compromised if there are too many solid obstacles between the transmitter base and the headsets. Try SIMOLIO within a shorter range to get the seamless audio experience.

If still no good, send your details to market@simolio.com.
Will SIMOLIO TV headphones work as hearing aids when you're not watching TV?
Sorry, we recommend that you wear professional hearing aids for daily use. The personal sound amplification function (MIC button) on the TV headset is only designed for temporarily listening to the person next to you while watching TV.
Can SIMOLIO TV listening device be used with my hearing aids?
This depends which model you purchased.
If it is a portable wireless speaker that you can put near the couch, sofa, etc, yes, it can. 

If it is a in ear TV earbuds or earphones set that have to go into your ear canals, then answer is NO. 

If it is a over ear TV headphone set that fits on or around your ears, then yes. 

If you are still not sure, please drop the model number you are interested in to market@simolio.com, we will come back to you as soon as possible.
Where can I find replacement parts for my SIMOLIO?

Battery for in ear TV headphones, battery for over ear TV headphones, battery for TV speaker set, ear tips, hanger loops, digital to analog audio converter, replacement headset for SIMOLIO portable speaker are available at SIMOLIO store. Click here to find more compatible parts.

If your desired accessories are not available in this page, contact market@simolio.com

Will these headphones work with my smart Samsung TV?
Yes, these SIMOLIO TV headphones and TV speakers work with LG, Samsung, SONY, VIZIO, Panasonic, TCL, Roku, Hisense, Sharp, Toshiba, Sanyo and nearly ALL TVs on the market.

Please check the AUDIO OUTPUT ports in the back of your TV, as long as you find an Digital Optical Audio Out (S/PDIF or TOSLINK), RCA Audio Out (red/white), or a headphone out (1/8" stereo plug), the SIMOLIO can be connected to any of the above mentioned interfaces.

SIMOLIO TV Headphones Compatibility

If you are still not sure about your TV compatibilit, please refer to follow video guide or email us at support@simolio.com and try to provide a picture of your TV rear jack panel and tell us the TV brand and model for a quick judgment.
Is it compatible with Sony tv?
Yes, these SIMOLIO TV headphones and TV speakers work with LG, Samsung, SONY, VIZIO, Panasonic, TCL, Roku, Hisense, Sharp, Toshiba, Sanyo and nearly ALL TVs on the market.

Please check the AUDIO OUTPUT ports in the back of your TV, as long as you find an Digital Optical Audio Out (S/PDIF or TOSLINK), RCA Audio Out (red/white), or a headphone out (1/8" stereo plug), the SIMOLIO can be connected to any of the above mentioned interfaces.

SIMOLIO wireless TV headphones Compatibility

If you are still not sure about your TV compatibility, please refer to following video guide or email us at support@simolio.com and try to provide a picture of your TV rear jack panel and tell us the TV brand and model for a quick judgment.
Does this wireless TV Speaker work with Vizio TV?
Yes, these SIMOLIO TV headphones and TV speakers work with LG, Samsung, SONY, VIZIO, Panasonic, TCL, Roku, Hisense, Sharp, Toshiba, Sanyo and nearly ALL TVs on the market.

Please check the AUDIO OUTPUT ports in the back of your TV, as long as you find an Digital Optical Audio Out (S/PDIF or TOSLINK), RCA Audio Out (red/white), or a headphone out (1/8" stereo plug), the SIMOLIO can be connected to any of the above mentioned interfaces.

SIMOLIO wireless TV headphones Compatibility

If you are still not sure about your TV compatibility, please refer to following video guide or email us at support@simolio.com and try to provide a picture of your TV rear jack panel and tell us the TV brand and model for a quick judgment.
Do SIMOLIO TV headphones have replaceable batteries?
Yes, of course.

The battery model SM-002-BAT is suitable for wireless TV headphone SM-823 Pro/SM-823D Pro/SM-824D1/SM-824D2/SM-863D/SM-8245 (under-chin)/ SM-828D1/SM-828D2.

The battery model SM-003-BAT is suitable for wireless TV headphone SM-825D Pro/SM-8245(over-ear)/SM-829D1/SM-829D2 and long cord wired TV headphone SM-905TV.

The battery model SM-621D-BAT is suitable for wireless TV speaker SM-621D/SM-621 and wired TV speaker SM-961.
How do I know if these wireless TV headphones support my LG TV?
Yes, these SIMOLIO TV headphones and TV speakers work with LG, Samsung, SONY, VIZIO, Panasonic, TCL, Roku, Hisense, Sharp, Toshiba, Sanyo and nearly ALL TVs on the market.

Please check the AUDIO OUTPUT ports in the back of your TV, as long as you find an Digital Optical Audio Out (S/PDIF or TOSLINK), RCA Audio Out (red/white), or a headphone out (1/8" stereo plug), the SIMOLIO can be connected to any of the above mentioned interfaces.

SIMOLIO TV headphones compatibility

If you are still not sure about your TV compatibility, please refer to following video guide or email us at support@simolio.com and try to provide a picture of your TV rear jack panel and tell us the TV brand and model for a quick judgment.
Would it work on a roku TV?
Yes, these SIMOLIO TV headphones and TV speakers work with LG, Samsung, SONY, VIZIO, Panasonic, TCL, Roku, Hisense, Sharp, Toshiba, Sanyo and nearly ALL TVs on the market.

Please check the AUDIO OUTPUT ports in the back of your TV, as long as you find an Digital Optical Audio Out (S/PDIF or TOSLINK), RCA Audio Out (red/white), or a headphone out (1/8" stereo plug), the SIMOLIO can be connected to any of the above mentioned interfaces.

SIMOLIO TV Headphones Compatibility

If you are still not sure about your TV compatibility, please refer to following video guide or email us at support@simolio.com and try to provide a picture of your TV rear jack panel and tell us the TV brand and model for a quick judgment.
Do these work with non-Smart TVs?
Yes, as long as your TV has either a digital optical, RCA or AUX (headphone) output.
TV Audio Out Port
Can I connect this tv earphone to apple tv?
You can if your Apple TV has one of the following audio out ports.
TV Audio Out Port
Can this wireless headphone be used with a stereo receiver?
Yes, but it is not compatible with ANY RCA(L/R) ports on your AV Receiver, ONLY use the BIG 6.35mm PHONE OUT on front side of your AV Receiver with the 6.35mm to 3.5mm adapter (purchase separately).
SIMOLIO wireless TV Headphones work with AV receiver
My TV does not have an audio output port, how do I hook up this wireless headphone?
If you have a TV box (such as a set-top box, cable box etc.) connected to your TV set, you can hook up the wireless transmitter to this TV box to listen.
SIMOLIO wireless TV headphones work with DVD
Can two people with their own headset watch TV together?
Yes, both the 2.4G wireless TV headset and the infrared wireless headset system support multiple receiving headsets to work at the same time, just connect one transmitter to the TV, and two or more people can watch TV together.

We have models with dual headphones (SM-824D2/SM-828D2/SM-829D2/SM-8245 etc), and there is also a single headphone for sale.

In addition, some over-ear headphones, such as SM-825D Pro, SM-829D1/SM-829D2, these headphones have a share port that allows any wired headset to plug in and share the same audio.
SIMOLIO wireless TV transmitter support multiple headphones work ta the same time
Can you use two headphone sets with one audio transmitter plugged into the tv?
Yes, both the 2.4G wireless TV headset and the infrared wireless headset system support multiple receiving headsets to work at the same time, just connect one transmitter to the TV, and two or more people can watch TV together.

We have models with dual headphones (SM-824D2/SM-828D2/SM-829D2/SM-8245 etc), and there is also a single headphone for sale.

In addition, some over-ear headphones, such as SM-825D Pro, SM-829D1/SM-829D2, these headphones have a share port that allows any wired headset to plug in and share the same audio.
SIMOLIO wireless tv headphones support multiple people hear tv simultaneously
Can I buy extra headphones and how many headphones can connect simultaneously?
Yes, both the 2.4G wireless TV headset and the infrared wireless headset system support multiple receiving headsets to work at the same time, just connect one transmitter to the TV, and two or more people can watch TV together.

We have models with dual headphones (SM-824D2/SM-828D2/SM-829D2/SM-8245 etc), and there is also a single headphone for sale.

In addition, some over-ear headphones, such as SM-825D Pro, SM-829D1/SM-829D2, these headphones have a share port that allows any wired headset to plug in and share the same audio.
SIMOLIO wireless transmitter can work up to multiple headphones at the same time
Can I buy a splitter and use two at once on the same tv?
We have models with dual headphones (SM-824D2/SM-828D2/SM-829D2/SM-8245 etc), and there is also a single headphone for sale.

In addition, some over-ear headphone such as SM-825D Pro, SM-829D1/SM-829D2, these headphones have a share port that allows any wired headset to plug in and share the same audio.
SIMOLIO wireless headphones don't need splitter
How do I order rechargeable batteries for my SIMOLIO hearing aid headphones SM-824D1?
Here is the replacement battery for SIMOLIO in-ear wireless TV headphones: https://www.amazon.com/Rechaegeable-SIMOLIO-Headphones-Rechargeable-Replaceable/dp/B082KN8SHL

Work with headset model SM-823 Pro, SM-823D Pro, SM-863D,SM-824D1,SM-824D2,SM-828D1,SM-828D2,SM-8245.
Can you listen to tv through the head set and still be able to play audio from tv speakers at same time?
Yes, you can still hear the sound playing from the TV speakers while you are using the headphones. There is an option embedded in the TV to listen to or exit the TV's internal speakers when headphones are plugged in. You can find this option in your TV sound settings. If it doesn’t, you can opt for our SM-828D or SM-829D series, which are designed with a bypass function that allows both headphones and soundbar to work simultaneously.
1. Sound out setting

2. Headphones and speaker work simultaneously
When using these headphones, will it turn off the sound coming from the TV speakers?
It actually depends on your TV's settings. For most smart TV models, they have option to play audio from both the TV's internal speakers and an external audio device simultaneously. But for some older TVs, the built-in speakers are muted once you plug anything into an audio output port (AUX, RCA, Optical, etc.). You can check your TV's audio settings to see if there is such option.
1. SIMOLIO wireless TV headphones and TV internal speakers work at the same time with optical connection

2. SIMOLIO wireless TV headphones and TV internal speakers work at the same time with anaolog connection
Is it possible to have both the tv speakers and the tv headphones work at the same time?
This is actually depending on your TV design. For most models of smart TV, like Samsung, LG or Sony TV, they may give you the option to play audio from both the TV's internal speakers and an external audio device simultaneously. Some older TVs however, the built-in speaker is muted once you plug anything into an audio output port (AUX, RCA, Optical, etc.). 
1. SIMOLIO wireless TV headphones and TV internal speakers work simultaneously with optical connection
2. SIMOLIO TV headphones and TV internal speaker work simultaneously with analog connection

You can refer to your TV manual or check your TV's audio settings to see if there is such an option. If not, then you can opt for our SM-828D or SM-829D series, which are designed with a bypass function that allows both headphones and soundbar to work simultaneously.
Does the SIMOLIO speaker mute the tv sound? Can others in my family hear TV while I use the SIMOLIO unit?
  • This is a TV feature and its availability depends on your TV design. Please check your TV manual or contact the manufacturer to ask whether the TV speakers can work or not when the audio output is activated.
  • For most TVs, the TV's internal speakers and an external audio device can work simultaneously. Such as, for some newer LG TVs, when do optical audio connection, you can set the “Sound Out” to “Internal TV Speaker + Audio Out(Optical)”. And for some newer Samsung TVs, you can enable this feature by selecting “TV Speaker” from the TV Sound Output lists.  SIMOLIO wireless TV headphones and TV internal speakers work at the same time with optical connection
  • However, for some old TV models , the built-in speakers might not work if you choose to use an external audio device (e.g., speaker, headphone). If your TV is like this and you only watch programs from one fixed AV device, such as cable box or STB etc, just hook up the Simolio unit to that device for enjoying TV with your family together.
    SIMOLIO TV headphones and TV internal speakers work at the same time with analog connection
Can the volume be adjusted for the headset wearer and remain at a different volume for the other TV watcher?
  • This is a TV feature and its availability depends on your TV design. Please check your TV manual or contact the manufacturer to ask whether the TV speakers can work or not when the audio output is activated.
  • For most TVs, the TV's internal speakers and an external audio device can work simultaneously. Such as, for some newer LG TVs, when do optical audio connection, you can set the “Sound Out” to “Internal TV Speaker + Audio Out(Optical)”. And for some newer Samsung TVs, you can enable this feature by selecting “TV Speaker” from the TV Sound Output lists.
SIMOLIO headphones and TV internal speakers work at the same time
  • However, for some old TV models , the built-in speakers might not work if you choose to use an external audio device (e.g., speaker, headphone). If your TV is like this and you only watch programs from one fixed AV device, such as cable box or STB etc, just hook up the Simolio unit to that device for enjoying TV with your family together.
  SIMOLIO speakers and TV speakers work at the same time
Why is there no sound when you connect the transmitter base to the headphone jack of the TV?
On some TVs, you need to activate the headphone output jack. Use your TV remote to go to the TV setting menu, select Audio and follow the instructions in your TV's user manual.
The setting menu of each TV brand is different, the following is an example for reference.
TV Sound Setting

If still no sound, use your headphone or speaker with a wire to listen. If no sound, then no signal coming from your TV’s headphone port.

Btw, your TV’s Analog Audio Settings may be set to “Variable” or “Fixed”. We recommend that you set your audio settings to “Fixed” for better audio quality.
TV Audio Setting
How do you charge the TV wireless headphones SM-825D Pro?
A: Through the USB charging port on the rear of the transmitter base.
You can use the included micro USB charging cable to connect the headphone to the USB charging port on the rear of the transmitter base for charging (make sure the transmitter base is powered on).
SIMOLIO SM-825D PRO wireless tv headphones charging way

B: Through the universal USB charger/outlet.
You can charge your headphone by plugging the micro USB power cable into a phone charger (5V/500mA-2A output), PC USB port, TV USB port or any other USB outlet. You don't need to go back to the transmitter base next to the TV to charge. It takes about 3 hours to fully charge the headphones. The LED will turn RED during charging and turn off once charging is completed.
SIMOLIO Over-ear TV headphones charging

C: Through the battery charging compartment in the base
A spare battery in the battery charging compartment at the side of the transmitter is always ready. When the headphone battery is low power, pull the spare battery 
out of the battery charging compartment for replacement, and the discharged battery can be put into the compartment for recharging.
SIMOLIO wireless TV headphones spare battery
How do you charge the wireless earbuds for tv model SM-824D?
A: Through the main charging slots on the base.
1) Connect the original power adapter with the transmitter and an electrical outlet, slide the OFF/MONO/STEREO switch to MONO or STEREO to power on the transmitter.
2) Slide the ON/OFF switch of the headset to “OFF”. Put the headset into the charging slot of the transmitter vertically and carefully and be sure the front of the headset with the logo of “SIMOLIO” is facing towards the front of the transmitter with the logo of “SIMOLIO”. The red charging indicator on the transmitter lights up and the headset starts charging. If not, please check and make sure the charging pins are fully inserted.
SIMOLIO In-ear headphones charging

B: Through the battery charging compartment in the base.
A spare battery in the battery charging compartment at the side of the transmitter is always ready. When the headphone battery is low power, pull the spare battery out of the battery charging compartment for replacement, and the discharged battery can be put into the compartment for recharging.
SIMOLIO wireless headphones with spare battery
How do you charge the wireless TV earphone model SM-828D?
  • Place the earphone on the magnetic charging stand for charging.
    SIMOLIO SM-828D1 wireless headphones for tv watching charging
  • Use the included USB charging cable to connect the earphone to a compatible USB charger for charging. You can use most mobile phone chargers on the market. 
    SIMOLIO SM-828D1 wireless headphones for TV watching charging 2
  • There is a spare battery always ready in the battery charging compartment on the transmitter for replacement.

    SIMOLIO SM-828D1 wireless headphones for TV watching charging 3
How to install the hanger loops/ear hooks?
You can attach the hanger loops to the headset to help you better adapt to the weight of the under-chin headset.
* Hook the decompression hanger loops on each side of the headset.
* Put the hanger loops on the ears, rotate them to best fit yourself.
SIMOLIO wireless Headphones for TV watching hanger loops
Where can I get a replacement battery for my Simolio TV soundbox?
Here are the replacement battery for SIMOLIO portable TV soundbox speaker SM-621D/SM621 and SM-961:
https://www.amazon.com/Simolio-Rechargeable-Li-ion-Battery-SM-621D/dp/B07B8QNDC9
Can I mute my TV and still listen to TV through my wireless headphone/speakers?
Yes, for specific setting, please consult your TV’s user manual. You may need to adjust the TV Audio setting.
SIMOLIO sound out setting
Can you use this with the tv muted,as I like to listen while my husband is asleep?
It depends on your TV. Generally you can enable this by clicking the mute key on the TV remote control or go to the TV's sound settings, and select "External Speaker" or OFF the TV's internal speaker.
How to mute TV internal speakers when using simolio wireless TV headphones
How do you charge the TV wireless speaker?
A: Through the Transmitter Base.
1) Connect the original power adapter with the transmitter and an electrical outlet, slide the OFF/ON switch to ON to power on the transmitter.
2) Put the speaker on the transmitter in correct direction. The red charging indicator on the speaker lights up and the speaker starts charging.
Charge SIMOLIO SM-621D wireless TV speakers

B: Through the Supplied AC Adapter.
Plug the supplied AC adapter into a standard electrical outlet, plug the other end of the AC adapter into the port labeled “DC 9V” on the back of the speaker.
Charge SIMOLIO SM-621D wireless speakers by AC adapter
How to adjust the under-chin headset for a more comfortable fit?
  • Hold each side of the headset arms and evenly bend inwards to adjust the arms into a more comfortable shape.
  • Repeat this process as necessary.
   Adjust SIMOLIO headphones memory stainless steel strips
My LG TV and SIMOLIO Bluetooth Headphones Transmitter set Won't Pair. What to do?
LG Smart TV users may experience a problem when using a Bluetooth Transmitter & Headphones set. The transmitter and headphones won't stay paired and the TV will ask you to share the sound with the TV.

Here's the fix:
Step 1: Factory Reset / Clear Pairing on your Transmitter & Headphones
1. Put the transmitter in pairing mode, and connect the headphone A to transmitter ‘A’.
Press and hold the 'A' button on the transmitter for 2 seconds until the A LED flashes RED and BLUE alternately to enter pairing mode. Then turn on the headphone A, press and hold both '+' & '-' buttons simultaneously until the LED flashes RED and BLUE alternately with two beeps. The headphones will then automatically enter pairing mode and will soon connect to Transmitter ‘A’. 
2. Repeat the same steps to connect headphone B to transmitter ‘B’.

Step 2: Lock the Bluetooth transmitter and headphone set
After step 1, Long press button A on the transmitter for 10 seconds until the red LED on A lights up for 2 seconds, headphone A has been successfully locked to ‘A’ on the transmitter, then repeat the same steps to lock headphone B.

Step 3: Block the TV prompt message
For most users, this should solve the problem. However, if your transmitter and headphones unpair themselves and you see the Sound Share prompt on your TV, please select "BLOCK" to avoid the devices pairing.

If you have accidentally selected "ACCEPT" and paired with the LG TV, you can clear the pairing history by repeating steps 1 and 2. 
I have a Samsung / LG TV. Why are my SIMOLIO Bluetooth headphones failing to reconnect to the transmitter?
Samsung / LG smart TVs tend to pair with any Bluetooth devices it can find, which blocks the SIMOLIO Bluetooth TV headphones from reconnecting to its transmitter. Try following the steps below in order to fix this:

1. DENY the Device - If a popup appears on your TV asking you to Allow or Deny / Block the device to connect to the TV, you MUST DENY / BLOCK the device from connecting.

2. REMOVE the Device - If your device is already paired with the TV, you’ll need to remove the device in your TV’s settings: SETTINGS > GENERAL > EXTERNAL DEVICE MANAGER > DEVICE CONNECTION MANAGER > DEVICE LIST > EDIT > Select all SIMOLIO devices > DELETE. Please note that the routing may differ based on your TV’s brand / model.

3. Turn OFF the TV - Physically turn your TV OFF or pull the plug (the remote control does NOT turn the TV off; it places it into standby mode which still allows the TV to connect to devices).

Other Tips:If your TV’s HDMI ARC port is in use, your optical audio output port might not work. Try connecting the transmitter via RCA / AUX or unplugging the HDMI ARC. 
Will these TV assisted headphones help me understand tv conversations instead of constantly asking my husband what was said on tv?
Absolutely Yes! These TV assistive listening devices come with an integrated voice clarity feature that reduces TV background noise while enhancing speech to ensure that you can get every detail of the TV show/movie.

With the Tone control, you can choose between three different preset listening profiles to optimize voice or music to meet your listening needs.

With Balance adjustment, you can change the left and right volume balance to improve the sound for "weaker" ears. You can even switch from stereo to mono to get more clarity on words. With these wireless TV headphones, you'll see how much fun watching TV is when you can easily follow the conversations. 

Learn more: https://www.simolio.com/blogs/category/how-to-help-the-elderly-or-the-hearing-impaired-hear-tv-clearly
Is there a left right balance on the over-ear TV headphone model SM-825D Pro?
Yes, for wireless headphone SM-825D Pro, you can find the balance adjustment button by opening the right headphone decorative cover.
In addition, there are headphone models such as SM-823 Pro, SM-823D Pro, SM-824D1, SM-824D2, SM-8245, SM-863D (IR model), SM-829D1, SM-829D2 that support balance adjustment.
Is there an audio/ video delay with these TV headsets?
No lip-sync delay. All SIMOLIO 2.4GHz wireless TV listening devices (headphones & speakers) provide <30ms of audio latency, compared to the 200ms+ of typical Bluetooth solutions on the market. This ensures that your audio and visual will always be perfectly synchronized.
Can these be used with a pacemaker?
The 2.4GHz wireless TV listening devices are not recommended for pacemaker carrier. If you have a pacemaker or other medical device, we suggest you to consult your physician or the technical specialist department of your pacemaker brand for certainty. 
However, our infrared wireless TV headphone SM-863D, voice enhanced wired TV headphone SM-905TV, clear voice wired TV speaker SM-961 are available for you.
What distance do these infrared wireless TV headphones work?
Most infrared devices have a range of 8 meters (25 feet), the optimal range for SIMOLIO wireless IR headphone SM-863D is about 15 meters (40 feet in direct line-of-sight without obstacles).
Any noticeable lag?
No lip-sync delay. All SIMOLIO 2.4GHz wireless TV listening devices (headphones & speakers) provide <30ms of audio latency, compared to the 200ms+ of typical Bluetooth solutions on the market. This ensures that your audio and visual will always be perfectly synchronized.
Will these 2.4G wireless headphones sync up with the tv dialog with no delay?
Slight latency is a common phenomenon in RF wireless transmission product. We use the latest 2.4GHz technology with latency between 20 ~ 30 milliseconds (ms), which is undetectable and far superior to Bluetooth in terms of audio synchronization.
How does the "MIC" button on the TV headset work?
When you want to hear the person next to you, you only need to press the "MIC" button once, the TV sound in the headset will be paused and your surrounding dialogue will be amplified.
Is the under-the-chin headset adjustable?
Yes, we use durable materials at the headset arms for adjusting to more comfortable shape.
Can a second headset be added to the SM-824D1?
Yes, the 2.4G wireless TV listening headphone system supports multiple headphones working at the same time. You just need to connect one transmitter to your TV. Find the addition headset here: https://www.amazon.com/SIMOLIO-Additional-Headphone-Replacement-Listening/dp/B07NXXQHW5
What is the product warranty?
Simolio offers a 12-month limited warranty for brand-new purchases from authorized sellers. Lean more: https://www.simolio.com/pages/warranty-returns
Can I use these TV earphones when laying in bed?
I would assume so. It would easily lay on ones chest while lying down.
Can you go into another room and still hear the TV?
Yes, for RF 2.4GHz wireless TV listening device, the effective distance is up to 100ft/30m. Its signal can pass through the wall and ceiling; therefore, if you still want to listen to your favorite music/ programs while walking around (cooking or working on the lawn and etc.), undoubtedly, the 2.4GHz RF wireless TV headphone/ speaker is your best choice.
Can others listen from TV speaker?
It depends on whether your TV supports simultaneous audio output, if yes, others can hear from the TV speaker. If not, you can choose our SM-828 or SM-829 series and use their transmitter's bypass function to bypass an external speaker/home stereo system. Here are the solutions with by-pass for your reference: 

SM-828D1: https://www.amazon.com/SIMOLIO-Headphones-Wireless-Watching-Clarified/dp/B0B8CY1MJ4
SM-828D2: https://www.amazon.com/SIMOLIO-Wireless-Headphones-Watching-Charging/dp/B0B8DC9QT7
If you have a sound bar do you need a splitter for the sound to function?
The “By-pass” feature of SIMOLIO SM-828D and SM-829D series allow them to work TOGETHER with your existing soundbar or stereo AV Receivers while sharing the same audio output port on TV, so that you can hear the TV at your own volume through the headphones while your family/friends listen through the speakers.
Does the IR headphone have to be pointed to the base unit?
The infrared diodes on the transmitter must be in direct line-of-sight with the headset for best performance. There cannot be anything blocking the direct signal, otherwise there will be no audio received and no sound heard. This is limitation of the IR system type, not the product itself.
Why do these TV headphones only work on one side?
1. Check and make sure that the BAL button is set in the middle position.

2. Make sure the audio cable is plugged firmly and in place.

3. Please check your TV settings to see if the TV audio is set to "MONO". Also please check the red and white ends of the TV's RCA audio output jack to make sure they are working properly.

4.    A: If the problem persists, please press the MIC button (if applicable) to see if only one side can be heard in the personal sound amplification mode.

      B: Or if it is a headphone with an AUX port, you can try using the provided AUX cable to connect the headphone directly to the audio device to see if both sides are working properly.

And please feel free to email us at support@simolio.com, we will provide you with a satisfactory solution according to your troubleshooting.
How long does it take to charge the new headphones?
Generally, it will take about 3~4 hours to fully charge.
Does this headphone SM-828D2 have bass and treble adjustments?
Yes, and other models that support TONE adjustment (treble/normal/bass) are the SM-823 Pro, SM-823D Pro, SM-824D1, SM-824D2, SM-863D, SM-8245, SM-825D Pro and SM-828D1.
Can you leave the SIMOLIO wireless headphones for TV turned on while recharging, or does that harm the batteries?
The headphones will automatically shut off when placed on charging stand. No need shut them off or disconnect anything, and it won't do any harm to the batteries.
Can this portable TV speaker be left plugged in all the time?
We do not recommend charging the speaker while using it to avoid swelling the battery. If an AC adapter is used to power the speaker, the battery can be removed.
Connected with optical cable and no sound Solutions?
In order for the SIMOLIO to work with the digital connection, the device (TV, Blu-ray, DVD, Cable/Satellite) must be transmitting the sound using PCM format. If you get no sound through the headset/speaker, then the other setting "Dolby Digtial" is most likely set on your TV or cable box. If this is the case the SIMOLIO will not work. Some TVs and other devices have the option to switch this setting. Please make sure your TV HDMI ARC port is not connected. And Start your Netflix/Aamzon Prime Program first before change to PCM. You would have to consult the device's (TV or cable box etc.) manual. This setting normally be found in the AUDIO OUT or Advanced Audio Section of the menu/settings on the device (TV or cable box etc).
Still need help? Please email us at support@simolio.com and tell us the brand and model number of your TV.
Why there is no sound under optical connection?
What you are experiencing is an incorrect audio format in Netflix and/or your TV, rather than an issue with our audio system. 

1. Make sure your TV HDMI ARC port is not connected.
2. Please check your Netflix app audio options. Start your Netflix/Aamzon Prime Program first before change to PCM. If surround sound (5.1) is selected, try changing it to Stereo (PCM) instead. 
Additionally, please update your TV's audio settings to PCM. Instructions can be found here: 

If you are still having issues, please reach out to us via support@simolio.com, we will be happy to assist you.
Do I need to turn the base or receiver off after shutting off the TV?
When no audio signal is detected, the base will turn into standby mode after 5~7 minutes, and the receiver will turn itself off within 5 minutes after the base go into standby mode.
What happens if I forget to turn the receiver off?
The receiver (headphone or speaker) will turn itself off 10 minutes if no audio is received from the transmitter base. To use it again, turn the ON/OFF switch Off and then to On again.
How to clean the ear tips?
To clean the silicone ear tips:
* Carefully remove the ear tips from the headset.
* Clean the ear tips with warm soapy water and rinse thoroughly.
* Dry the ear tips.
* Put the ear tips back on the receiver.
Which type of technology should I choose, Infrared (IR) or Radio Frequency (RF)?
Whether you choose a headset that uses RF technology or IR technology depends on how you are going to be using the headphones. 
  • If you are planning on only using the headphones to watch TV while you are in view of the TV and don’t plan on moving around, you should look at headphones that use IR technology. They are the best choice for situations such as court proceedings that require confidentiality or residential complexes where there might be high wireless usage and will have the least amount of interference from other devices.
  • If you are going to use the headphones while moving around your house and still want to hear the TV, hi-fi system or radio, then RF headphones are the best option (Model: SM-823D Pro, SM-824D1, SM-824D2, SM-825D Pro, SM-8245, SM-828D1,SM-828D2, SM-829D1, SM-829D2). The RF signal can go through walls and ceiling, so they tend to be good options if you move around a lot and still want to keep listening while in another room.
Can I have two sets of SIMOLIO infrared wireless TV headsets in the same house?

Yes, you can have two sets of SIMOLIO infrared wireless TV headphones (model number is SM-863D) in the same house. If two sets of SIMOLIO are to be used on the same TV, only one base is needed to be connected to the TV. The second base in such case only serves as a charging dock for the second headphones.

Can I purchase two sets of SIMOLIO 2.4GHz wireless TV headphones? One for upstairs bedroom use, one for downstairs.

If two sets of SIMOLIO 2.4GHz wireless TV listening headphones are used at the same time in the same house, please make sure two bases are at least 10 meters away from each other. Otherwise, one headset may pick up the sound from the other base, or there may be bad sound.

If there is nothing that can be changed about the distance, please switch on the base first, take the headset close to the base, then turn on the headphones.

Or as an alternative solution, you can purchase one SIMOLIO 2.4GHz headphones, one SIMOLIO infrared TV headphones for bedroom use. With one 2.4GHz set and one infrared set, you do not need to worry about distance or interference problem at all.
How to use 2 set SIMOLIO 2.4GHz wireless headphones for TV watching

SIMOLIO wireless TV headphones. Why they are not working/no sound?

A:  If SIMOLIO wireless TV headsets do not work in your case, or if there is no sound coming from the earphones or speaker, please take the following steps:

  1. Make sure the connected ports on your TV is proper and working.TV Lsitening Devices Compatibility
  2. Make sure power cords and audio cable are functioning and are firmly connected.
  3. Restart the BASE and the HEADPHONES. Both BASE and HEADPHONES should show solid GREEN LED after reboot, indicating that they are well connected and that audio signal is being transmitted properly.

B:  If the green LED on the BASE flashes slowly after the base is restarted, there is no valid signal into the transmitter. Then


  1. Re-check the connection between the base and the TV
  2. Re-check the volume level on TV and TV box. Normally volume on TV/TV box should be set to around 30%-40%.
  3. Make sure the transmitter base is at least 4 feet away from smart TV/TV box/wifi router/other electronic devices that run on 2.4GHz radio frequency. Or simply, you may try the base at a different location or try the base on another TV/phone/iPad/PC, or any compatible audio device.
  4. Re-check that proper TV audio out ports are used. For example, if you are connecting with red and white RCA cable, make sure the red and white ports on the TV are labeled “AUDIO OUT” or “OUTPUT”. Any red and white ports labeled with “COMPOSITE IN””VIDEO IN””COMPONENT IN” are improper.TV Listening Davices RCA

C:  If the green LED remains solid green after the system is restarted, then


Check your TV setting (PCM setting and TV Sound out setting)
         If you are connecting to TV with optical fiber cable, make sure TV’s optical audio out is set to PCM/LPCM.

         For some Samsung models, set the Sound out to “external speakers”.     
SIMOLIO TV Listening Devices TV Setting
2. If you are connecting to TV with RCA or AUX cable, you can use a wired headset to test if there is sound coming out from the port you are using.

For some Samsung models, set the Sound Out to “external speakers” when you are connecting with RCA cable; set the Sound Out to “Headset” when AUX is what you are connecting to.
 

If above tips do not work, contact your TV manufacturer and ask how to get sound out of the audio port? For further assistance, email to market@simolio.com.
Audio cuts in and out, intermittent sound, choppy, how should I fix this?
If you experience the above mentioned problem, try following tips to solve the issue:

Method 1: Check the volume level on your TV/TV-related box. 

Sufficient volume level from TV/TV-related box is required for stable signal output to the transmitter. If volume is set low on your TV, or TV box, or both of them, signal transmission to the base and headphones becomes intermittent or choppy. Generally we would recommend an average TV and TV box volume of 30%-40%.

Method 2: Rule out any possible source of wireless interference. 

Wireless signals around the transmitter base can have negative impacts on the wireless working range of SIMOLIO headphones for TV watching. The so-called source of wireless interference includes smart WiFi TV, TV Box, home appliances like microwave oven, or other 2.4GHz and Bluetooth devices transmitting on 2.4GHz band.

Method 3: Remove or avoid physical obstacles.

While SIMOLIO 2.4GHz TV hearing device can carry audio signals beyond walls, ceilings, or human bodies, actual working range will be compromised if there are too many solid obstacles between the transmitter base and the headsets. Try SIMOLIO within a shorter range to get the seamless audio experience.

If still no good, send your details to market@simolio.com.
Will SIMOLIO TV headphones work as hearing aids when you're not watching TV?
Sorry, we recommend that you wear professional hearing aids for daily use. The personal sound amplification function (MIC button) on the TV headset is only designed for temporarily listening to the person next to you while watching TV.
Can SIMOLIO TV listening device be used with my hearing aids?
This depends which model you purchased.
If it is a portable wireless speaker that you can put near the couch, sofa, etc, yes, it can. 

If it is a in ear TV earbuds or earphones set that have to go into your ear canals, then answer is NO. 

If it is a over ear TV headphone set that fits on or around your ears, then yes. 

If you are still not sure, please drop the model number you are interested in to market@simolio.com, we will come back to you as soon as possible.
Where can I find replacement parts for my SIMOLIO?

Battery for in ear TV headphones, battery for over ear TV headphones, battery for TV speaker set, ear tips, hanger loops, digital to analog audio converter, replacement headset for SIMOLIO portable speaker are available at SIMOLIO store. Click here to find more compatible parts.

If your desired accessories are not available in this page, contact market@simolio.com

Will these headphones work with my smart Samsung TV?
Yes, these SIMOLIO TV headphones and TV speakers work with LG, Samsung, SONY, VIZIO, Panasonic, TCL, Roku, Hisense, Sharp, Toshiba, Sanyo and nearly ALL TVs on the market.

Please check the AUDIO OUTPUT ports in the back of your TV, as long as you find an Digital Optical Audio Out (S/PDIF or TOSLINK), RCA Audio Out (red/white), or a headphone out (1/8" stereo plug), the SIMOLIO can be connected to any of the above mentioned interfaces.

SIMOLIO TV Headphones Compatibility

If you are still not sure about your TV compatibilit, please refer to follow video guide or email us at support@simolio.com and try to provide a picture of your TV rear jack panel and tell us the TV brand and model for a quick judgment.
Is it compatible with Sony tv?
Yes, these SIMOLIO TV headphones and TV speakers work with LG, Samsung, SONY, VIZIO, Panasonic, TCL, Roku, Hisense, Sharp, Toshiba, Sanyo and nearly ALL TVs on the market.

Please check the AUDIO OUTPUT ports in the back of your TV, as long as you find an Digital Optical Audio Out (S/PDIF or TOSLINK), RCA Audio Out (red/white), or a headphone out (1/8" stereo plug), the SIMOLIO can be connected to any of the above mentioned interfaces.

SIMOLIO wireless TV headphones Compatibility

If you are still not sure about your TV compatibility, please refer to following video guide or email us at support@simolio.com and try to provide a picture of your TV rear jack panel and tell us the TV brand and model for a quick judgment.
Does this wireless TV Speaker work with Vizio TV?
Yes, these SIMOLIO TV headphones and TV speakers work with LG, Samsung, SONY, VIZIO, Panasonic, TCL, Roku, Hisense, Sharp, Toshiba, Sanyo and nearly ALL TVs on the market.

Please check the AUDIO OUTPUT ports in the back of your TV, as long as you find an Digital Optical Audio Out (S/PDIF or TOSLINK), RCA Audio Out (red/white), or a headphone out (1/8" stereo plug), the SIMOLIO can be connected to any of the above mentioned interfaces.

SIMOLIO wireless TV headphones Compatibility

If you are still not sure about your TV compatibility, please refer to following video guide or email us at support@simolio.com and try to provide a picture of your TV rear jack panel and tell us the TV brand and model for a quick judgment.
Do SIMOLIO TV headphones have replaceable batteries?
Yes, of course.

The battery model SM-002-BAT is suitable for wireless TV headphone SM-823 Pro/SM-823D Pro/SM-824D1/SM-824D2/SM-863D/SM-8245 (under-chin)/ SM-828D1/SM-828D2.

The battery model SM-003-BAT is suitable for wireless TV headphone SM-825D Pro/SM-8245(over-ear)/SM-829D1/SM-829D2 and long cord wired TV headphone SM-905TV.

The battery model SM-621D-BAT is suitable for wireless TV speaker SM-621D/SM-621 and wired TV speaker SM-961.
How do I know if these wireless TV headphones support my LG TV?
Yes, these SIMOLIO TV headphones and TV speakers work with LG, Samsung, SONY, VIZIO, Panasonic, TCL, Roku, Hisense, Sharp, Toshiba, Sanyo and nearly ALL TVs on the market.

Please check the AUDIO OUTPUT ports in the back of your TV, as long as you find an Digital Optical Audio Out (S/PDIF or TOSLINK), RCA Audio Out (red/white), or a headphone out (1/8" stereo plug), the SIMOLIO can be connected to any of the above mentioned interfaces.

SIMOLIO TV headphones compatibility

If you are still not sure about your TV compatibility, please refer to following video guide or email us at support@simolio.com and try to provide a picture of your TV rear jack panel and tell us the TV brand and model for a quick judgment.
Would it work on a roku TV?
Yes, these SIMOLIO TV headphones and TV speakers work with LG, Samsung, SONY, VIZIO, Panasonic, TCL, Roku, Hisense, Sharp, Toshiba, Sanyo and nearly ALL TVs on the market.

Please check the AUDIO OUTPUT ports in the back of your TV, as long as you find an Digital Optical Audio Out (S/PDIF or TOSLINK), RCA Audio Out (red/white), or a headphone out (1/8" stereo plug), the SIMOLIO can be connected to any of the above mentioned interfaces.

SIMOLIO TV Headphones Compatibility

If you are still not sure about your TV compatibility, please refer to following video guide or email us at support@simolio.com and try to provide a picture of your TV rear jack panel and tell us the TV brand and model for a quick judgment.
Do these work with non-Smart TVs?
Yes, as long as your TV has either a digital optical, RCA or AUX (headphone) output.
TV Audio Out Port
Can I connect this tv earphone to apple tv?
You can if your Apple TV has one of the following audio out ports.
TV Audio Out Port
Can this wireless headphone be used with a stereo receiver?
Yes, but it is not compatible with ANY RCA(L/R) ports on your AV Receiver, ONLY use the BIG 6.35mm PHONE OUT on front side of your AV Receiver with the 6.35mm to 3.5mm adapter (purchase separately).
SIMOLIO wireless TV Headphones work with AV receiver
My TV does not have an audio output port, how do I hook up this wireless headphone?
If you have a TV box (such as a set-top box, cable box etc.) connected to your TV set, you can hook up the wireless transmitter to this TV box to listen.
SIMOLIO wireless TV headphones work with DVD
Can two people with their own headset watch TV together?
Yes, both the 2.4G wireless TV headset and the infrared wireless headset system support multiple receiving headsets to work at the same time, just connect one transmitter to the TV, and two or more people can watch TV together.

We have models with dual headphones (SM-824D2/SM-828D2/SM-829D2/SM-8245 etc), and there is also a single headphone for sale.

In addition, some over-ear headphones, such as SM-825D Pro, SM-829D1/SM-829D2, these headphones have a share port that allows any wired headset to plug in and share the same audio.
SIMOLIO wireless TV transmitter support multiple headphones work ta the same time
Can you use two headphone sets with one audio transmitter plugged into the tv?
Yes, both the 2.4G wireless TV headset and the infrared wireless headset system support multiple receiving headsets to work at the same time, just connect one transmitter to the TV, and two or more people can watch TV together.

We have models with dual headphones (SM-824D2/SM-828D2/SM-829D2/SM-8245 etc), and there is also a single headphone for sale.

In addition, some over-ear headphones, such as SM-825D Pro, SM-829D1/SM-829D2, these headphones have a share port that allows any wired headset to plug in and share the same audio.
SIMOLIO wireless tv headphones support multiple people hear tv simultaneously
Can I buy extra headphones and how many headphones can connect simultaneously?
Yes, both the 2.4G wireless TV headset and the infrared wireless headset system support multiple receiving headsets to work at the same time, just connect one transmitter to the TV, and two or more people can watch TV together.

We have models with dual headphones (SM-824D2/SM-828D2/SM-829D2/SM-8245 etc), and there is also a single headphone for sale.

In addition, some over-ear headphones, such as SM-825D Pro, SM-829D1/SM-829D2, these headphones have a share port that allows any wired headset to plug in and share the same audio.
SIMOLIO wireless transmitter can work up to multiple headphones at the same time
Can I buy a splitter and use two at once on the same tv?
We have models with dual headphones (SM-824D2/SM-828D2/SM-829D2/SM-8245 etc), and there is also a single headphone for sale.

In addition, some over-ear headphone such as SM-825D Pro, SM-829D1/SM-829D2, these headphones have a share port that allows any wired headset to plug in and share the same audio.
SIMOLIO wireless headphones don't need splitter
How do I order rechargeable batteries for my SIMOLIO hearing aid headphones SM-824D1?
Here is the replacement battery for SIMOLIO in-ear wireless TV headphones: https://www.amazon.com/Rechaegeable-SIMOLIO-Headphones-Rechargeable-Replaceable/dp/B082KN8SHL

Work with headset model SM-823 Pro, SM-823D Pro, SM-863D,SM-824D1,SM-824D2,SM-828D1,SM-828D2,SM-8245.
Can you listen to tv through the head set and still be able to play audio from tv speakers at same time?
Yes, you can still hear the sound playing from the TV speakers while you are using the headphones. There is an option embedded in the TV to listen to or exit the TV's internal speakers when headphones are plugged in. You can find this option in your TV sound settings. If it doesn’t, you can opt for our SM-828D or SM-829D series, which are designed with a bypass function that allows both headphones and soundbar to work simultaneously.
1. Sound out setting

2. Headphones and speaker work simultaneously
When using these headphones, will it turn off the sound coming from the TV speakers?
It actually depends on your TV's settings. For most smart TV models, they have option to play audio from both the TV's internal speakers and an external audio device simultaneously. But for some older TVs, the built-in speakers are muted once you plug anything into an audio output port (AUX, RCA, Optical, etc.). You can check your TV's audio settings to see if there is such option.
1. SIMOLIO wireless TV headphones and TV internal speakers work at the same time with optical connection

2. SIMOLIO wireless TV headphones and TV internal speakers work at the same time with anaolog connection
Is it possible to have both the tv speakers and the tv headphones work at the same time?
This is actually depending on your TV design. For most models of smart TV, like Samsung, LG or Sony TV, they may give you the option to play audio from both the TV's internal speakers and an external audio device simultaneously. Some older TVs however, the built-in speaker is muted once you plug anything into an audio output port (AUX, RCA, Optical, etc.). 
1. SIMOLIO wireless TV headphones and TV internal speakers work simultaneously with optical connection
2. SIMOLIO TV headphones and TV internal speaker work simultaneously with analog connection

You can refer to your TV manual or check your TV's audio settings to see if there is such an option. If not, then you can opt for our SM-828D or SM-829D series, which are designed with a bypass function that allows both headphones and soundbar to work simultaneously.
Does the SIMOLIO speaker mute the tv sound? Can others in my family hear TV while I use the SIMOLIO unit?
  • This is a TV feature and its availability depends on your TV design. Please check your TV manual or contact the manufacturer to ask whether the TV speakers can work or not when the audio output is activated.
  • For most TVs, the TV's internal speakers and an external audio device can work simultaneously. Such as, for some newer LG TVs, when do optical audio connection, you can set the “Sound Out” to “Internal TV Speaker + Audio Out(Optical)”. And for some newer Samsung TVs, you can enable this feature by selecting “TV Speaker” from the TV Sound Output lists.  SIMOLIO wireless TV headphones and TV internal speakers work at the same time with optical connection
  • However, for some old TV models , the built-in speakers might not work if you choose to use an external audio device (e.g., speaker, headphone). If your TV is like this and you only watch programs from one fixed AV device, such as cable box or STB etc, just hook up the Simolio unit to that device for enjoying TV with your family together.
    SIMOLIO TV headphones and TV internal speakers work at the same time with analog connection
Can the volume be adjusted for the headset wearer and remain at a different volume for the other TV watcher?
  • This is a TV feature and its availability depends on your TV design. Please check your TV manual or contact the manufacturer to ask whether the TV speakers can work or not when the audio output is activated.
  • For most TVs, the TV's internal speakers and an external audio device can work simultaneously. Such as, for some newer LG TVs, when do optical audio connection, you can set the “Sound Out” to “Internal TV Speaker + Audio Out(Optical)”. And for some newer Samsung TVs, you can enable this feature by selecting “TV Speaker” from the TV Sound Output lists.
SIMOLIO headphones and TV internal speakers work at the same time
  • However, for some old TV models , the built-in speakers might not work if you choose to use an external audio device (e.g., speaker, headphone). If your TV is like this and you only watch programs from one fixed AV device, such as cable box or STB etc, just hook up the Simolio unit to that device for enjoying TV with your family together.
  SIMOLIO speakers and TV speakers work at the same time
Why is there no sound when you connect the transmitter base to the headphone jack of the TV?
On some TVs, you need to activate the headphone output jack. Use your TV remote to go to the TV setting menu, select Audio and follow the instructions in your TV's user manual.
The setting menu of each TV brand is different, the following is an example for reference.
TV Sound Setting

If still no sound, use your headphone or speaker with a wire to listen. If no sound, then no signal coming from your TV’s headphone port.

Btw, your TV’s Analog Audio Settings may be set to “Variable” or “Fixed”. We recommend that you set your audio settings to “Fixed” for better audio quality.
TV Audio Setting
How do you charge the TV wireless headphones SM-825D Pro?
A: Through the USB charging port on the rear of the transmitter base.
You can use the included micro USB charging cable to connect the headphone to the USB charging port on the rear of the transmitter base for charging (make sure the transmitter base is powered on).
SIMOLIO SM-825D PRO wireless tv headphones charging way

B: Through the universal USB charger/outlet.
You can charge your headphone by plugging the micro USB power cable into a phone charger (5V/500mA-2A output), PC USB port, TV USB port or any other USB outlet. You don't need to go back to the transmitter base next to the TV to charge. It takes about 3 hours to fully charge the headphones. The LED will turn RED during charging and turn off once charging is completed.
SIMOLIO Over-ear TV headphones charging

C: Through the battery charging compartment in the base
A spare battery in the battery charging compartment at the side of the transmitter is always ready. When the headphone battery is low power, pull the spare battery 
out of the battery charging compartment for replacement, and the discharged battery can be put into the compartment for recharging.
SIMOLIO wireless TV headphones spare battery
How do you charge the wireless earbuds for tv model SM-824D?
A: Through the main charging slots on the base.
1) Connect the original power adapter with the transmitter and an electrical outlet, slide the OFF/MONO/STEREO switch to MONO or STEREO to power on the transmitter.
2) Slide the ON/OFF switch of the headset to “OFF”. Put the headset into the charging slot of the transmitter vertically and carefully and be sure the front of the headset with the logo of “SIMOLIO” is facing towards the front of the transmitter with the logo of “SIMOLIO”. The red charging indicator on the transmitter lights up and the headset starts charging. If not, please check and make sure the charging pins are fully inserted.
SIMOLIO In-ear headphones charging

B: Through the battery charging compartment in the base.
A spare battery in the battery charging compartment at the side of the transmitter is always ready. When the headphone battery is low power, pull the spare battery out of the battery charging compartment for replacement, and the discharged battery can be put into the compartment for recharging.
SIMOLIO wireless headphones with spare battery
How do you charge the wireless TV earphone model SM-828D?
  • Place the earphone on the magnetic charging stand for charging.
    SIMOLIO SM-828D1 wireless headphones for tv watching charging
  • Use the included USB charging cable to connect the earphone to a compatible USB charger for charging. You can use most mobile phone chargers on the market. 
    SIMOLIO SM-828D1 wireless headphones for TV watching charging 2
  • There is a spare battery always ready in the battery charging compartment on the transmitter for replacement.

    SIMOLIO SM-828D1 wireless headphones for TV watching charging 3
How to install the hanger loops/ear hooks?
You can attach the hanger loops to the headset to help you better adapt to the weight of the under-chin headset.
* Hook the decompression hanger loops on each side of the headset.
* Put the hanger loops on the ears, rotate them to best fit yourself.
SIMOLIO wireless Headphones for TV watching hanger loops
Where can I get a replacement battery for my Simolio TV soundbox?
Here are the replacement battery for SIMOLIO portable TV soundbox speaker SM-621D/SM621 and SM-961:
https://www.amazon.com/Simolio-Rechargeable-Li-ion-Battery-SM-621D/dp/B07B8QNDC9
Can I mute my TV and still listen to TV through my wireless headphone/speakers?
Yes, for specific setting, please consult your TV’s user manual. You may need to adjust the TV Audio setting.
SIMOLIO sound out setting
Can you use this with the tv muted,as I like to listen while my husband is asleep?
It depends on your TV. Generally you can enable this by clicking the mute key on the TV remote control or go to the TV's sound settings, and select "External Speaker" or OFF the TV's internal speaker.
How to mute TV internal speakers when using simolio wireless TV headphones
How do you charge the TV wireless speaker?
A: Through the Transmitter Base.
1) Connect the original power adapter with the transmitter and an electrical outlet, slide the OFF/ON switch to ON to power on the transmitter.
2) Put the speaker on the transmitter in correct direction. The red charging indicator on the speaker lights up and the speaker starts charging.
Charge SIMOLIO SM-621D wireless TV speakers

B: Through the Supplied AC Adapter.
Plug the supplied AC adapter into a standard electrical outlet, plug the other end of the AC adapter into the port labeled “DC 9V” on the back of the speaker.
Charge SIMOLIO SM-621D wireless speakers by AC adapter
How to adjust the under-chin headset for a more comfortable fit?
  • Hold each side of the headset arms and evenly bend inwards to adjust the arms into a more comfortable shape.
  • Repeat this process as necessary.
   Adjust SIMOLIO headphones memory stainless steel strips
My LG TV and SIMOLIO Bluetooth Headphones Transmitter set Won't Pair. What to do?
LG Smart TV users may experience a problem when using a Bluetooth Transmitter & Headphones set. The transmitter and headphones won't stay paired and the TV will ask you to share the sound with the TV.

Here's the fix:
Step 1: Factory Reset / Clear Pairing on your Transmitter & Headphones
1. Put the transmitter in pairing mode, and connect the headphone A to transmitter ‘A’.
Press and hold the 'A' button on the transmitter for 2 seconds until the A LED flashes RED and BLUE alternately to enter pairing mode. Then turn on the headphone A, press and hold both '+' & '-' buttons simultaneously until the LED flashes RED and BLUE alternately with two beeps. The headphones will then automatically enter pairing mode and will soon connect to Transmitter ‘A’. 
2. Repeat the same steps to connect headphone B to transmitter ‘B’.

Step 2: Lock the Bluetooth transmitter and headphone set
After step 1, Long press button A on the transmitter for 10 seconds until the red LED on A lights up for 2 seconds, headphone A has been successfully locked to ‘A’ on the transmitter, then repeat the same steps to lock headphone B.

Step 3: Block the TV prompt message
For most users, this should solve the problem. However, if your transmitter and headphones unpair themselves and you see the Sound Share prompt on your TV, please select "BLOCK" to avoid the devices pairing.

If you have accidentally selected "ACCEPT" and paired with the LG TV, you can clear the pairing history by repeating steps 1 and 2. 
I have a Samsung / LG TV. Why are my SIMOLIO Bluetooth headphones failing to reconnect to the transmitter?
Samsung / LG smart TVs tend to pair with any Bluetooth devices it can find, which blocks the SIMOLIO Bluetooth TV headphones from reconnecting to its transmitter. Try following the steps below in order to fix this:

1. DENY the Device - If a popup appears on your TV asking you to Allow or Deny / Block the device to connect to the TV, you MUST DENY / BLOCK the device from connecting.

2. REMOVE the Device - If your device is already paired with the TV, you’ll need to remove the device in your TV’s settings: SETTINGS > GENERAL > EXTERNAL DEVICE MANAGER > DEVICE CONNECTION MANAGER > DEVICE LIST > EDIT > Select all SIMOLIO devices > DELETE. Please note that the routing may differ based on your TV’s brand / model.

3. Turn OFF the TV - Physically turn your TV OFF or pull the plug (the remote control does NOT turn the TV off; it places it into standby mode which still allows the TV to connect to devices).

Other Tips:If your TV’s HDMI ARC port is in use, your optical audio output port might not work. Try connecting the transmitter via RCA / AUX or unplugging the HDMI ARC. 
Will these TV assisted headphones help me understand tv conversations instead of constantly asking my husband what was said on tv?
Absolutely Yes! These TV assistive listening devices come with an integrated voice clarity feature that reduces TV background noise while enhancing speech to ensure that you can get every detail of the TV show/movie.

With the Tone control, you can choose between three different preset listening profiles to optimize voice or music to meet your listening needs.

With Balance adjustment, you can change the left and right volume balance to improve the sound for "weaker" ears. You can even switch from stereo to mono to get more clarity on words. With these wireless TV headphones, you'll see how much fun watching TV is when you can easily follow the conversations. 

Learn more: https://www.simolio.com/blogs/category/how-to-help-the-elderly-or-the-hearing-impaired-hear-tv-clearly
Is there a left right balance on the over-ear TV headphone model SM-825D Pro?
Yes, for wireless headphone SM-825D Pro, you can find the balance adjustment button by opening the right headphone decorative cover.
In addition, there are headphone models such as SM-823 Pro, SM-823D Pro, SM-824D1, SM-824D2, SM-8245, SM-863D (IR model), SM-829D1, SM-829D2 that support balance adjustment.
Is there an audio/ video delay with these TV headsets?
No lip-sync delay. All SIMOLIO 2.4GHz wireless TV listening devices (headphones & speakers) provide <30ms of audio latency, compared to the 200ms+ of typical Bluetooth solutions on the market. This ensures that your audio and visual will always be perfectly synchronized.
Will this work with a smart TV too?
Yes. SIMOLIO IR transmitter can work with a smart TV. It is not only provided with Car Cigar Lighter, but also with AC Adapter for home using. If your TV has optical, AUX or RCA audio out port, we suggest you to choose SM-264D; if your TV has AUX or RCA audio out port, we suggest you to choose SM-261A.
How many headphones can pair with one transmitter?
There are no limited on the number of connections. But please don’t sit closely to each other to avoid the interference
Will this work with Sony IR headphones?
SIMOLIO Infrared transmitter can work with all universal frequency IR headphones (Channel A: L: 2.3MHz, R: 2.8MHz; Channel B: L: 3.2MHz, R: 3.8MHz). Please confirm with your seller or manufacturer if it's universal IR headphones before purchasing.
Why SM-264D works perfect in a car, but no sounds when using with the TV?
When use optical connection, Please set "Audio Out" format of your TV and TV relative audio source (e.g.,TV/cable box/ Blue-ray disc etc) to "PCM". Settings>Sound > Digital Audio Out>Dolby Digital/PCM", select "PCM" (menu depends on TV ).
How long is the working distance?
Effective range  up to 30 feet in sight of open air. IR signal can't go through obstacle, please make sure there is no any obstacle between headphones and transmitter.
Do these work on a 2021 Tahoe?They worked on the 2016 we had but it doesn’t seem to pair with the 2021
Sorry that these wireless DVD headphone can't work with 2021 Tahoe.
But these IR DVD Headphones can work with
Chevy Tahoe (Trim) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 and 2016
Chevy Suburban 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 and 2016
Chevy Avalanche 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 and 2013
Chevy Uplander 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 and 2016
Chevy Silverado 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 and 2016
Chevy Traverse 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 and 2020
Chevy Equinox 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 and 2020
Chevy Colorado 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 and 2016
And also compatible with most non-factory installed DVD or BluRay systems.
Kindly reminder: These headphones will not work from the front seat of the vehicle, please sit in the rear seat with a clear line-of-sight to the DVD screen.
If you have any questions, please do not hesitate to contact us directly.
will these work with a 2018 ford expedition?
Sorry, but these IR in Car Entertainment Wireless Foldable Headphones can work on
Ford Expedition 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and 2017.
They also can work on
Ford Flex 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 and 2020
Ford Freestar 2004, 2005, 2006, 2007 and 2008
Ford Explorer 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 and 2020
Ford Escape 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and 2017
Ford Edge 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and 2017
And also compatible with most non-factory installed DVD or BluRay systems.
If you have any questions, please do not hesitate to contact us directly.
Will these work with 2012 Volkswagen Routan?
Yes, these wireless headphones for DVD work with
Volkswagen Routan 2008, 2009, 2010, 2011, 2012, 2013 and 2014
Volkswagen Tiguan 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and 2017
Volkswagen Toureg 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and 2017
And also compatible with most non-factory installed DVD or BluRay systems.
If you have any questions, please do not hesitate to contact us directly.
Will these work for 2018 Honda Odyssey?
Yes, these Two Channel Folding Universal IR Headphones are compatible with Honda Odyssey 2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019,2020 and 2021.
SIMOLIO Wireless IR DVD Player Headphones also work with Honda Pilot 2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019,2020 and 2021
Honda Accord 2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 and 2017
Honda CR-V 2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 and 2017
Honda Ridgeline 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019 and 2020
Honda Acura RDX 2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019 and 2020
Honda Acura MDX 2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018 and 2019
and most non-factory installed DVD or BluRay systems.
If you have any questions, please do not hesitate to contact us directly. 
Do these work with 2018 gmc yukon?
Sorry that these SIMOLIO IR headphones for car are not compatible with 2018 gmc yukon, but they can work with
GMC Yukon (XL) 2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015 and 2016,
GMC Denali (Trim) 2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015 and 2016,
GMC Sierra 2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015 and 2016,
GMC Acadia 2007,2008,2009,2010,2011,2012,2013,2014,2015 and 2016,
GMC Canyon 2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015 and 2016,
GMC Envoy 2005,2006,2007,2008 and 2009,
GMC Terrain 2009,2010,2011,2012,2013,2014,2015 and 2016,
And also work with most non-factory installed DVD or BluRay systems.
If you have any questions, please do not hesitate to contact us directly.
Do these fit 2018 infiniti qx80?
Yes, these Universal IR Wireless Headphones are compatible with
Infiniti QX 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021
Infiniti JX 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021
Infiniti FX 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021
Infiniti M 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 and 2020
And also work with most non-factory installed DVD or BluRay systems. 
Do these work on a 2017 Jeep Grand Cherokee?
Yes, SIMOLIO IR Car Headphones for kids are compatible with 2017 jeep grand cherokee.
SIMOLIO Universal IR in Car Entertainment Wireless Foldable Headphones also work with
jeep grand cherokee 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021.
Jeep Commander 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
Jeep Compass 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021
Jeep Patriot 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
Jeep Renegade 2014, 2015, 2016, 2017, 2018
Jeep Wrangler 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021
And work with most non-factory installed DVD or BluRay systems.
If you have any questions, please do not hesitate to contact us directly.
Do they work with 2018 Kia Sedona
Yes these IR headphones can work with 2018 Kia Sedona.
Also these On-Ear Infrared Headphones Universal are compatible with
Kia Sedona 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021.
Kia Borrego 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021.
Kia Sorento 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021.
Kia Sportage 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021.
Kia Frontier 2015
If you have any questions, please do not hesitate to contact us directly.
Does it work with 2012 dodge caravan
Yes these IR headphones can work with 2012 dodge caravan.
Also these On-Ear Infrared Headphones Headset Universal are compatible with
Dodge Grand Caravan (with uconnect ves system built in) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 and 2020.
Dodge Charger 2006-2021, Dodge Durango 2006-2021, Dodge Journey 2006-2021, Dodge Ram 1500 2002-2021, Dodge Avenger 2002-2016, Dodge Caliber 2002-2016, Dodge Challenger 2002-2016, Dodge Dakota 2002- 2016, Dodge Magnum 2002-2018, and most non-factory installed DVD or BluRay systems.
If you have any questions, please do not hesitate to contact us directly.
I have a uconnect system will these work with that system? (2016 town n country van)
Yes, SIMOLIO IR Wireless Headphone for Car DVD can work with Chrysler Town & Country (with uconnect system) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 and 2018 (Compatible with 2013-2018 Town and Country BLURAY (NOT DVD) system. Must be equipped with Factory Original Rear Vehicle Entertainment System. Will Not Work With Aftermarket Systems.).
Also work with Chrysler Voyager 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and 2020, 2021
Chrysler Aspen 2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017
Chrysler 300 2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019,2020,2021
Chrysler PT Cruiser 2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014
Chrysler Pacifica 2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 (For 2017-2021 Chrysler Pacifica, these car IR headphones only work with Ceiling Mounted Screens, NOT COMPATIBILE with Pacifica Dual Seatback Screens).
Are these compatible with the 2018 pacifica?
These Wireless DVD Headphone can work with 2018 Chrysler Pacifica. If you are not sure the compatibility, please refer the Vehicles' Compatibility list.

Our headphones work well with any universal-frequency car DVD (Universal IR frequencies: Channel A: L/2.3MHZ,R/2.8MHZ; Channel B: L/3.2MHZ,R/3.8MHZ). 
Does this work in a 2017 toyota sienna?
Thanks for your attention to SIMOLIO car headphones.
Yes, these 2 channels IR headphones for DVD car can work in a 2017 toyota sienna. It can also work in following:
Toyota Sienna 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
Toyota 4Runner 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
Toyota Highlander 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
Toyota Land Cruiser 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 2017,
Toyota Rav4 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
Toyota Sequoia 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and 2017,
Toyota Tundra 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
Toyota Venza 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017.
Do these work with a Cadillac Escalade 2022?
Sorry that these IR headphones can't work with Cadillac Escalade 2022.
But these IR DVD Headphones can work with:
Cadillac Escalade (esv) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 and 2016
Cadillac SRX 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 and 2016
SIMOLIO IR headphones are universal (frequencies: CH A: L/2.3MHz,R/2.8MHz; CH B: L/3.2MHz,R/3.8MHz) and compatible with most car DVD systems.
If you have any questions, please do not hesitate to contact us directly.
Would these work in a 2005 Nissan Titan
Yes, these IR Wireless Foldable Headphones for Headrest DVD work on Nissan Titan 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021
SIMOLIO Wireless DVD Headphones are also compatible with
Nissan Armada 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021
Nissan Murano 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021
Nissan Pathfinder 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021
Nissan Quest 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021
And also work with most non-factory installed DVD or BluRay systems.
Will this work on by 2014 infinity QX60
Yes, these 2 Channel IR Wireless Headphones are compatible with
Infiniti QX 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021
Infiniti JX 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021
Infiniti FX 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021
Infiniti M 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 and 2020
And also work with most non-factory installed DVD or BluRay systems
Will it work for a buick enclave 2012?
Yes, these IR Wireless Headphones for car can compatible with Buick enclave 2012.
And also compatible with:
Buick Enclave 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and 2017
Buick Terraza 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 and 2016
Buick Rendezvous 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and 2017
Buick Rainier 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and 2017
And also work with most non-factory installed DVD or BluRay systems.
If you have any questions, please do not hesitate to contact us directly. 
Simolio appears to have three different dual-channel IR headphones that are roughly the same price. What is the difference between the 3?
The differences are the different designs and packagings (SM-561B, SM-561O, SM-562, SM-563 are with carrying bags; SM-561D are with EVA cases). In addition, the model SM-562 Replacement Headphones for car DVD also has the hearing protection function of 3-level volume limiting (75dB for Toddlers, 85dB for Kids, 94dB for Adults and in noisy environments), there are 4 options for you (1/2/3/4 pack). 
Why the sound keeps cutting in and out?
Please turn up the volume of the auido device (such as the car DVD player) to sufficient to ensure the stable audio signal, and make sure there is no any odstacle between the car DVD player and these Infrared headphones, kindly reminder: please don't cover the headphones by your hands.
We lost the battery covers of SM-562, where can I get it?
Please click here, you can get the Replacement Battery Covers for Infrared Wireless Headphones SM-562.
Can you use these with an iPad?
These are IR wireless headphones, not bluetooth headphones, but if your iPad has a standard 3.5mm headphone port, then you can use these headphones as wired headphones on your iPad,in wired mode doesn't need batteries.
Do these fit adults?
These SIMOLIO IR Vehicle headphones are designed with adjustable and retracable headband, and the headband incorporates memory stainless steel strips inside, so the shape or wearing angle can be adjusted to fit kids and adults. If toddlers feel these headphones are too big, we suggest you to buy SIMOLIO Detachable Nylon Fastening Straps to attach to the headphones for a better wearing experience.
Can I use it to watch TV?
Yes, these IR headphones can be used with SIMOLIO Dual Channel Universal IR transmitter (not included, SM-264D or SM-261A) to enjoy TV shows without disturbing your family or kids. 
If 1 side of the headphones has static and the other side has clear sound what causes that?
1. Please check IR sensor frequencies of your car DVD player and make sure they are compatible with these universal IR headphones (universal frequency: Channel A: L/2.3MHZ,R/2.8MHZ; Channel B:L/3.2MHZ,R/3.8MHZ)

2.If your car DVDs are universal, then please pay attention to the IR transmitting angle and distance. Sound will be cracking if too far away, or not in sight of IR transmitter, which is caused by the limitation of the IR system type, not the product itself.

3.Some DVD manufacturers ignore the quality of built-in infrared transmitter. The poor IR transmitting modules as well as the mounting angle and quantity of infrared-ray emission tube, all of these will cause poor audio reception.

4.Please use 2*AAA decent and premium alkaline batteries. Not suggest to use rechargeable NI-MH battery.
If my two kids want to watch different cartoons in car, will it do it?
Yes, for two kids at the same row watching different movies from the headrest DVD players without interference by switching to A/B channel, and please make sure the channel of SIMOLIO infrared headphones is same as the relative DVD player's and the distance bewteen 2 kids need more than 1 meter to avoid the interference.
How to fold up SM-563?
Please follow the steps in the picture to fold and store SM-563.
How to fold and store simolio wireless car headphones SM-563
Could't attach the T shape straps to headphones successfully.
Please follow the steps in the picture to attach the T shape straps.
How to attach T shape Straps
Why the headset does not work after turning on, approximate 15 minutes later it works?
Please do not use/store these IR car headphones in areas which are susceptible to rain, moisture, direct sunlight, extreme heat or cold, excessive dust, dirt or humidity. Keep the headphones in some extreme weather or environments can cause malfunction and possible damage to your headphones.
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