1. Function: answer calls, voice control, play/pause
2. Bluetooth version: V4.1
3. The headset has a built-in 85mAh lithium polymer battery
4. Earphone charging time is about 1 hour / standby is about 100 hours / continuous use is about 8-10 hours
5. Charging case: 340mAh lithium polymer battery 6. The charging time of the charging box is about 2 hours, after use, put it back into the charging box to charge, the standby time can reach 400 hours