Desctription:
Battery capacity: 4000mAh lithium battery
Bluetooth version: 5.0
Speaker: 3W*1
Transmission distance: about 10m
Frequency Response: 100Hz-20KHz
Signal to noise ratio: ≥ 85dB
Working voltage: 3.7V
Distortion: <1%
Charging voltage: DC5V
Charging port: Micro USB
Talking time: about 3h
Play music: about 3.5h
Standby time: ≥ 30 days
Charging time: about 2.5h