1. Wireless specification: V4.1, support protocol headset, hands-free, A2DP, Avrcp.
2. Transmission range 10 m transmission frequency 2.4GHz.
3. Charging voltage DC5V, charging time is about 2 hours. 4. Battery capacity: 45mAH product size: 65*13*25mm.
5. Call time 3 hours, music time:3 hours, standby time 80 hours, product net weight: 8g.
6. Power display < support Apple phone and part of Android mobile >.
7. Pen holder clip design.