Compatible for any audio sources such as tv dvd/hi-fi player, computers, etc Ultra high frequency wireless headphone No limitation to the location of earphones within the effective range of the system No cable connection between transmitter and headphones is required as radio frequency signal can pass through wall, floor, ceiling or partitions Transmits 863mhz stereo signal up to 100 meter Unimited number of headphones of the same frequency can be used with this system 3 channels selection for better reception Auto power cut off the transmitter when there is no signal received Phase-locked loop (pll) technology
