1. Function: answer calls, voice control, play/pause, power bank
2. Bluetooth version: V4.1
3. The headset has a built-in 40mAh lithium polymer battery
4. The charging time of the headset is about 0.5-1 hour / standby is about 50 hours / continuous use is about 3-4 hours
5. Charging case: 2000mAh lithium polymer battery
6. The charging time of the charging box is about 3 hours, after use, put it back into the charging box to charge, and the standby time can reach 300 hours