One Two Channel Universal Infrared Headphone: Wireless IR for Rear Entertainment Systems DVD Player Head Phone for in Car TV Video Audio Listening Superior Sound Quality Additional 48" 3.5mm Aux Cord Wireless 2 Channel IR headphone to enjoy in car listening without the hassle of cables. 3.5mm Auxilary port. Allows plug in use on any Ipad/Pod, MP3 devices that uses a 3.5mm auxillary cord (cord included) Automatic shut off prevents batteries from draining when left on Headphones fold for easy compact storage ***These will not work if your screens are in the headrest and they are not Bluetooth Headphones. For IR systems only.