M19 wireless microphone
Sound delay: ≤20ms
Microphone: -32dB±2dB omnidirectional silicon microphone
Frequency response: 20Hz-20KHz
Signal-to-noise ratio: ≥65dB
Microphone battery/life time: 60MAH/5H
Charging compartment battery: 300MAH
Charging compartment battery charging time: about 16 hours
Wokring temperature-10℃-45℃
