Product typeWireless Microphone System AccessoriesTypeMicrophonesTransmission frequency range823 - 832 MHz, 863 - 865 MHzChannels12Groups1Microphone typeDynamicDirectivityCardioidFrequency response55 - 16000 HzSignal-to-noise ratio104 dBRated HF output power10 mWControlsPower On/OffIndicatorsASC IR Sync (Green/Amber Blinking LED), Battery (low battery: red), Power LED (Power ON: green)Operating voltage2 x AA batteryOperating time>10 hLength257 mmDiameter50 mmWeight0,235 kgOther featuresIR frequency synchronisation, Pilot tone