Description
Mic: digital microphone
Input voltage: 5V
Mic battery: 110mAh (2 pcs is 220mAh)
OBLUN'S
Charging compartment battery: 800mAh
Battery life: 9 hours
Signal-to-noise ratio: 64DBM
Transmission delay: 30MS
Sensitivity: -42 dB
Frequency response range: 20-20KHZ
Transmission distance: 20-30m (barrier-free)
(Chat with seller)