4 Packs of Two Channel Folding Adjustable Universal Rear Entertainment System Infrared Headphones Wireless IR DVD Player Headphones for in Car Tv Video Audio Listening 4 Packs of Wireless IR headphones 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 ( cords not included) Automatic shut off prevents batteries from draining when left on Headphones fold for easy compact storage Two Channel: Will do everything a one channel headphone does but gives you the option to change between two different audio sources.