SIMOLIO 3 Pack of DVD Wireless Headphones with Storage Bag, Durable Car Kids IR Headphones Wireless for Car Entertainment System, Infrared Headphones with Aux Cord, Not Work on 2017+ GM's or Pacifica

Universal IR frequencies: Channel A: Left: 2.3MHZ, Right: 2.8MHZ; Channel B: Left: 3.2MHZ, Right: 3.8MHZ.

Before purchasing, please check IR sensor frequencies of your car DVD player first (consult your DVD manual or car manufacturer), especially for the car factory supplied DVD systems. If you DVDs are non-universal, it will cause no sound, audio cuts, only hear at one side.

How to get the best performance:

• Please use 2AAA premium alkaline batteries and make sure they are inserted properly.
• Please check that the volume on your DVD player (and on the headphones), make sure they are turned up at a sufficient level.
• Please make sure that you try both channels on the headphone (there is a Channel switch on the side of the headphone) as your vehicle may be transmitting on either channel A or B. Using the wrong channel will cause intermittent sound issues.
• If you watch different movies on two DVDs, set each DVD on a different channel, and the headphone to the channel of the DVD you would like to listen to.
• The Simolio IR wireless headphones can also be used outside the car with the included Aux cable for smart phones, Tablets, MP3 etc, or equipped with an IR transmitter for watching TV at home.
• For the toddler or someone who feel the headphone is too big, we suggest to use the included detachable & adjustable headbands to fit you better. The headband incorporates memory elastic stainless steel strips inside, you can remould the headband shape to fit you better, or adjust the wearing angle to make the headphones fit snug on your ears.