Microphone: Digital Silicone MicInput Voltage: 5VBattery Capacity: 70mAhCharging Compartment Battery: 300mAhBattery Life: 6 HoursSignal-to-noise Ratio: 64DBM Adaptive Noise ReductionTransmission Delay: 30MSSensitivity: -42DBFrequency Response Range: 20-20K
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