4 Pack of Wireless Infrared Two-Channel Foldable Headphones Universal Rear Entertainment System Infrared Headphones for in Car TV Video Audio Listening 4 pack of wireless IR headphones to enjoy in car listening without the hassle of cables Pressure-relieving ear-pads and adjustable headband that ensure comfortable fit and seal in sound 3.5mm headphone jack allows compatible use with iPhone/iPod/iPad and MP3 devices. Good way for kids to enjoy DVD/music during car trips Folding ear-cups for easy storage and Auto shut-off for battery-saving. Connectivity technology: wireless