For use with Power Acoustik(R) Mobile A/V systems; 2-channel, 900 MHz wireless headphones with swivel, fold-flat earpads for seat pocket storage; Dual stereo audio inputs; Channel selectable from each headphone; Adjustable straps; Auto mute control; Auto power off; On/off switch saves battery life; Variable volume control; Auto level control; MP3 player input via 3.5 mm input; 100ft operational distance; Includes 2 AAA batteries and EVA hard carrying case; 1 pair;