1. Wireless specification：Wireless V4.2 WT200S
2. Support protocol：Headset Hands-free A2DP Avrcp
3. Charging voltage DC5V; charging time is about 2 hours
4. Battery capacity: 70mAh; cable length：60cm; net weight: 14g
5. Call/music time: 4 hours; standby time: 140 hours
6. Battery display <Support for Apple phones and some Android phones>