2-3 hours
When the Bluetooth headset leaves the factory, the first three times should be charged for 6-8 hours, and then each charge for 2-3 hours can be done. Because the Bluetooth is not fully charged at the factory, the first three times of charging time is longer, and then each charge can be 2-3 hours.
The battery of the wireless Bluetooth headset is relatively small, and it can be filled in 2 to 3 hours.