Wireless Microphone, Bluetooth Mobile Phone Microphone with Audio/Noise Cancellation Function

Specification:
Transmission protocol: 2.4GHz
Transmission distance: barrier-free distance ≥ 20 meters; human barrier distance ≥ 10 meters
Noise Reduction: Intelligent AI noise reduction
Hall: Support
Sound delay: ≤30ms
Microphone: -38dB ± 3dB omnidirectional silicon microphone
Frequency response: 20Hz-20KHz
Sampling rate: 48 kHz
Signal-to-noise ratio: ≥72dB
Working current: 11~12mA
Shutdown current: 2~3uA
Microphone Battery/Life: 70mAh/5 Hours
Battery in charging compartment: 600 mAh
Charging time for the battery in the charging compartment: Approx. 2 hours
Charging voltage of the battery in the charging compartment: DC4.8 to 5.2 V
Adapter: 5V/1A; 5V/2A
Working temperature: -10 to 45 degrees

Packing list:
Microphone * 2, Receiver * 1, Charging compartment * 1, Charging cable * 1, Instruction manual * 1