Receiver: Carrier Frequency Range: UHF612.5~689.75MHz(selected) Channel:One channel Sensitivity:When input 6dBv,S/N>60Db Frequency Band Width:30MHz Max Deviation Range:±45KHz S/N Ratio: > 105 dB T.H.D:<0.7%@1KHz Frequency Response:45Hz~18KHZ ±3dB Power Supply:DC 3V ;Battery:AAA*2 Output Socket:6.35mm adapter Working range:30M