BJBJ A90 Pro TWS Earbuds with Digital Display

Bluetooth version V5.3
Stand-by time 140 days
Talk time 4 hours
Music playtime 6-7H * 3Times
Charging time 1.5H
Charging voltage DC 5V
Frequency range 20-20000Hz
Transmission distance 10m-15m
Battery capacity 33mAh
Charging case 300mAh