Note: During use, when the blue light flashes quickly, it means low voltage. Please charge it as soon as possible. If the light completely off, it will no longer work. Shut down to charge red light is always on, and the red light is off when it is full. Specification:Condition: 100% Brand New Item Type: Wireless MicrophoneMaterial: ABSColor: As Pictures Shown Weight: Approx. 175g/6.2oz Signal: Digital SamplingFrequency Range: 550.5MHZ-589.5MHZPairing Mode: Automatic PairingFrequency Response: 50Hz-8KHzTransmission Mode: UHFPower Consumption: 0db Current <75mAPower Supply: 400mAh Built-in Lithium Battery Output: Mixed OutputMicrophone Core: CondenserCharging Port: DC 5VFrequency Matching Mode: Automatic Pairing by Default Wireless Distance: 50m/164ft in the Classroom Environment Package List:2 x Transmitter 1 x Receiver1 x Charging Cable2 x Windproof Cotton1 x Adapter1 x Manual1 x Type-C Adapter Cable
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