** Charging case with OVP protection**
**Earphone with Li-on battery protection**
Bluetooth Distance: 10-15m
Bluetooth Version : 5.4
Play Time:6 H ( 100%volume), 7 H ( 50%volume)
Charging times : about 3.4 times
Talk Time: 6 hours
Battery Capacity: Earbuds 33mAh; Charging case 400mAh
Speaker: 10mm
Charging Time of earbuds: about 1.5hour
Charging Time of case: about 2 hours