Description
Product parameters:Microphone: digital silicon shipping markInput voltage: 5VMicrophone battery: 300MAHReceiver battery: 300MAHEndurance: 6 hoursSignal-to-noise ratio: 64DBMTransmission delay: 30MSSensitivity: – 42dBFrequency response range: 20-20KHZTransmission distance: barrier-free 20-30mColor box size: 12.1 * 8.1 * 3.1cm
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