NAVISKAUTO 10.1 Inch TFT LCD Wide Digital Screen Universal Car Headrest DVD Player Multimedia Player Monitor with IR Headphone-Black (CH1005B+Y0101) Support DVD/DVCD/DVD+R/DVD-R/VCD/CD/CD-R/MP4/MP3/JPEG/DIVX The FM transmitter can send the audio signal from the headrest to the other radio receiver(such as car stereo), then you can share the audio with others. There are 8 available frequencies: 87.7, 88.1, 88.5, 88.9, 106.7, 107.1, 107.5, 107.9 IR infrared transmitter function: support 2 channels wireless infrared earphone The IR transmitter allows you to enjoy the audio files with wireless headphones, and it supports dual channel(A: 2.3-2.8MHz, B:3.2-3.8MHz) wireless infrared headphones Multi-language OSD: English, French, Spanish, German, Portuguese