1. Bluetooth version: 5.0
2. Communication distance: 10 meters
3. Earphone battery life: 4 hours
4. Battery life: 20 hours
5. One touch control, simple operation
6. Dual channel connection, free switching between master and slave
7. In-ear design, stable to wear
8. Mobile phones, tablets, computers with Bluetooth function can be used
9. Light weight and easy to carry