1. Wireless V4.2 WT.
2. Support protocols: Headset, Hands-free, A2DP, AVRCP.
3. Charging voltage DC5V. Charging time: about 2 hours.
4. Battery capacity: 50mAh.
5. Sizes: L25 × W20 × H30mm. Weight: 6g.
6. Calls / music time: 3 hours, standby time: 100 hours.