Frequency range 2.4GHz
Charging input voltage DC4.8~5.4v
Transfer distance: The barrier-free distance is more than 20 meters / the human obstacle distance is about 7 meters
Working time about 6H
S/N ratio 64 dBm
Start-up current about 20Ma
Charging interface Lightning
Transmission delay 26MS
Working current: about 10mA
Charging time about 90 min
Sensitivity (microphone) -42dB
Shutdown current 10uA
Battery capacity: battery 70mA
Antenna type ceramic antenna
Charging current about 80mA
Full battery voltage 4.1~4.25V
Frequency response range 20-20KHZ
Power supply mode Lightning interface mobile phone
Storage temperature -40 ~ 85?
Working temperature -10 ~ 45?