Bluetooth:V5.4
Talk Time:4H
Stand-by Time:140 Days
Earphone Charging Time:1.5H
Case Charging Time:2H
Charging Voltage:DC 5V
Transmission Distance:10-15M
Earphone Music Time:6-7 hours * 3Times
Freguency Range:20-20000Hz
Earphone Battery:33mAh
Charging Case Battery:300mAh

** Charging case with OVP protection**

**Earphone with Li-on battery protection**

Bluetooth Distance: 10-15m

Play Time: 5-6.5 hours*3Times 

Battery Capacity: Earbuds 33mAh

Charging case:300mAh

Speaker: moving coil type Φ13/32 ohm

Charging Time: 1.5 hour

Bluetooth version::V5.4
Battery capacity:33mAh/300mAh
Music playtime:6-7H*3Timas
Charging time:1.5-2H
Transmission distance:10-15M
Charging voltage:DC 5V

Bluetooth version:V5.3
Stand-by time:140 days
Talk time:3.5 hours
Music playtime:6-7 hours * 3Times
Charging time:1.5 hours
Charging voltage:DC 5V
Frequency range:20-20000Hz
Transmission distance:10m-15m
Battery capacity:33mAh
Charging case:300mAh