SPECIFICATIONS: OVERALL SYSTEM 整机: Number of Channels(声道):2 channels Carrier frequency range(频率范围):220MHz-270MHz Stalibity(稳定性):±0.006%(at 25℃) Ambient temperature(使用环境温度):10℃±50℃ Normal deviation:±22kHz S/N ratio(信噪比):<120dB T.H.D(失真率):80dB Audio output(声音输出):Balanced and Unbalanced Power requirement(电源要求):AC 110V-120V/220V-240V,200mA Dimensions(W×D×H)(尺寸):210×135×35mm Weight(weight):Approx.0.85kgs Wireless microphone 无线麦克风 Cartridge(音头):Dynamic or Condenser Antenna(天线):Built-in RF output(射频输出):8 hours Safety Approvals(安全认证):