... headphone for cars 2.Dual & single Channel 3.comfortable wearing 4.CE/ROHS/FCC certified 5.OEM service Wireless IR stereo headphone ... main product is including 2.4G,silent disco(UHF), bluetooth,IR, and MP3 player(headband headphone). All of them are ... can be used simultaneously Specifications:dual channel: single channel: IR Transmitters(optional): For more information,welcome to visit our web ...