* Dual channel UHF wireless stereo headphone system

* Carrier frequency: a) For Europe: 863.5MHz & 864.5MHz b) For U.S.A: 914MHz &915MHz

* Receive signals up to 50 meters omnidirectional 360° 

* Active noise reduction system for crystal clear sound quality

* Auto mute function available for headphone

* Auto power on/off function for transmitter

* Double PLL system for ultimate frequency stability

* Any number of additional headphones can be used simultaneously with a single transmitter

* Built-in 40mm mylar speaker

* Power supply of transmitter: DC12V 150mA Power supply of headphone: 2 AAA batteries