Vinnfier VF WM2200DUOUC Professional Universal Microphone

Frequency: UHF 640.0 – 699.5MHz
Sensitivity: -66±3dB (0dB=1v/ubar)
Dynamic Range: >90dB
Harmonic Distortion: <0.01%
Frequency Response: 30Hz – 20KHz
Audio Output: 395Mv@1k 70mv IN
Working Power: <0.3W
Transmitter Power: 6dBm
Higher Harmonics: 60dB ≤
Min. Working Voltage: 3V
Modulation: 1/4TDQPSK
Working Distance: 40m – 50m
Headset Microphone Battery: 2 x AA Batteries (not included)
Microphone Charging Time: 4.5 Hours
Microphone Working Time: Up To 8+ Hours
Receiver Built-in Battery: Rechargeable Battery 1200mAh
Receiver Charging Time: 3 Hours
Receiver Working Time: Up To 6+ Hours