1. Wireless specification V5.0 RTL8763BFR.
2. Support agreement of Headset, Hands-free, A2DP, Avrcp.
3. Charging voltage DC5V. Charging time is about 1.5 hours for earphones and about 2 hours for charging case.
4. Battery capacity: 50mAh for single earphone and 350mAh for charging case.
5. Calls / music time is about 3 hours. Standby time is about 100 hours.
6. Size: 55*33*24mm. Weight: single earphone is 4g. Total weight is 32g.