Mini Microphone, Wireless Microphone, Stable Signal for Live Streaming Recording Specification: Condition: 100% Item Type: Wireless Microphone Material: ABS Color: As Pictures Shown Weight: Approx. 175g/6.2ozAudio Signal: Digital Sampling Frequency Range: 550.5MHZ-589.5MHZ Pairing Mode: Automatic Pairing Frequency Response: 50Hz-8KHz Transmission Mode: UHF Power Consumption: 0db Current <75mA Power Supply: 400mAh Built-in Lithium Battery Output: Mixed Output Microphone Core: Condenser Charging Port: DC 5V Frequency Matching Mode: Automatic Pairing by Default Wireless Distance: 50m/164ft in the Classroom Environment; Package List: 2 x Transmitter 1 x Receiver 1 x Charging Cable 2 x Windproof Cotton 1 x Adapter 1 x Manual 1 x Type-C Adapter Cable ; 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. ;