RF/VHF cordless headset with dual channel

The GH-837 is RFcordless stereoheadset for home audio.Dual channel for two audio sources to avoid interference.The signal can get through walls. Enjoy the freedom of movement while watching TV without disturbing others. Features: VHF/RF wireless stereo headphone Dual channels for two audio sources. Mini jack for audio input like MP3,iPod; Double PLL system for stable frequency ability Operation range can be up to 40 meters Personal volume control The headphone can be used as a hi-fi stereo wired headphone Power supply of headphone: Requires 2xAAA(1.5V) batteries Power supply of transmitter: Requires 2xAAA(1.5V) batteries or 5V adapter Technical Data: System: VHF/RF Modulation: FM Mode: Stereo Transmission Power: <10mW Signal-to-noise Ration: >70dB Channel Separation: >50dB THD: <1% Speaker: 40mm mylar Effective Range: > 40 meters (open air) Frequency Response: 30 15000Hz Power Supply: Headphone: 2 x AAA batteries Transmitter: 2 x AAA batteries or DC5V