1) A wireless headset for clear and interference-free TV Sound
2) A sound enchancer for the elderly or people who are not with good hearing
3) Support both S/PDIF connector and 3.5mm plug
4) TX:DC 12V/500mA RX:DC 3.7V/600mA(lithium)
5) Operating Distance:8~10m
6) Frequency response range :50HZ~22KHZ 7) IR Carry Frequency:2/3/2.8MHZ