sell headphone(H705MV)

DescriptionTransmitter *Radiate Frequency:FM 49.85MHz *Radiate power:max120dB *6F22(9V) battery, or used AC/DC adopter *Audio input:500mV Headphone *Size "AAA" x2(3V) *Receiver frequency:FM 49.85MHz *Audio frequency response:50HZ-15KHZ(+/-3dB) *S/N:45dB *Stereo separation:25dB *Out put power:50mW *Receiver distance:40 meter(none impediment)