Specifications:
- Bluetooth chip: Jerry 6973
- Bluetooth version: 5.0
- Headphone battery: built-in 3.7V/25mah
- Rechargeable battery: built-in 3.7V/160mah
- Earphone music time: 4.5 hours Charging with battery life: 12 hours
- Headphone charging time: 1 hour Charging compartment charging
- time: 2 hours