BJBJ A80 Pro TWS True Wireless Earphone

Bluetooth version: V5.3
Stand-by time :140 days
Talk time: 4 hours
Music playtime: 5-6 hours
Charging time: 1.5H
Charging voltage: DC 5V
Frequency range: 20-20000Hz
Transmission distance: 10m-15m
Battery capacity: 33mAh
Charging case: 300mAh