* 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: Requires 2xAAA(1.5V) batteries