1. Bluetooth V5.0 RTL8763BFR
2. Support protocols Headset Hands-free A2DP Avrcp
3. Charging time: about 1 h; charging voltage DC5V
4. Battery capacity: 400mah (charging box); 30 mAh (single ear)
5. Call/music time: 2.5 h; standby time: 200 h
6. Total weight: 32g; weight: 3g (single earphone)