Absolute USA AWH201 Dual Channel Infrared Wireless Stereo Headphone

Absolute USA AWH-201 Dual Channel Infrared Wireless Stereo Headphone, Infrared Light Technology, Carrier Frequency A source Left Channel 23. MHz, Right Channel 2.8 MHz B Source Left Channel 3.2 MHz, Right Channel 3.8 MHz Impedance 32 Ohms, full time stereo mode. Volume Adjustment and Channel selection switch, compatible with all-in vehicle AV applications using wireless IR, Headband adjustable to fit adults to small children Dual Source with A/B source selector switch, Power supply indicator light, Rotating earpiece design for compact storage, active noise reduction system for crystal clear sound, built-in 40mm speaker for audiophile grade sound quality