In-car Wireless Headphone: IR-903D

Wireless headphone Description: 1) IR wireless stereo headphone (2CH) for cars 2) Light weight design for comfortable wearing 3) Auto mute and auto power off function on headphone 4) Personalvolume control 5) Compatible with all in-vehicle AV applications Specification: 1) Dual channel 2) Carrier frequency: a) A channel: Right channel: 2.8MHz; Left channel: 2.3MHz b) B channel: Right channel: 3.8MHz; Left channel: 3.2MHz 3) Speaker: 30mm mylar 4) Cone impedance: about 32ohm 5) Effective range(maximum): about 10 meters 6) Audio model: stereo 7) S/N ratio: 70dB(minimum) 8) Channel separation: 40dB(minimum) 9) Frequency response: 30 20,000Hz 10) Power supply: 2×AAA battery 11) Battery life: about 48 hours Accessories: 1) Audio cable 2) AAA batteries 3) Guarantee letter