Best Xo Vision Car Bluetooths

Have any problem? please email to Simolio Support: [email protected]. We are confident to get one good solution for you.IMPORTANT!!!1.Pls check IR sensor frequencies of your car DVD players and make sure they are universal before purchasing. (consult your DVD's manual or manufacturer. Universal IR frequencies: Channel A: L/2.3MHZ,R/2.8MHZ; Channel B: L/3.2MHZ,R/3.8MHZ). If you DVDs are non-universal, it will cause no sound, audio cuts, only hear at one side.2.The Simolio IR wireless headphones are the perfect traveling companion for the family on the go! Compatible with all universal car DVD Players.They 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.3.Pls use 2*AAA premium alkaline batteries. Not suggest to use rechargeable Ni-MH battery. Revolving clasp battery cover, rotate clockwise to lock it, or it won't stay latched.4.Pls 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 limitation of the IR system type, not the product itself. The best audio signal will be obtained if you sit directly in front of the monitor within 6 feet.If you sit on either side of the monitor you can expect the same great reception within 35 degrees to the left or the right of the monitor.5.There are 2 channels option for the Simolio IR headphones. Set each DVD on a different channel, and the headphone to the channel of the DVD you would like to listen to.6.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 (Ref. FIG 4). 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.