1. Bluetooth specification: Bluetooth V5.0, WT, support protocol: Headset Hands-free A2DP Avrcp
2. Transmission range: 10 meters, transmission frequency: 2.4GHz
3. Charging voltage: DC5V, charging time is about 2 hours
4. Battery capacity: 50mAH, product size: 36.5*15*13mm
5. Talk time: 3h, music time:3h, standby time: 70h; Product net weight: 6G
6. Battery level display