BT: V5.1

Working range: barrier-free 10 meters

Wireless frequency: 2.402-2.480GHz 

Charge and discharge cycle: 2300 timesO Charging boxcapacity: 270mAhO Charging voltage: DC5V-1A

Charging time: 2 hours

Talk time: about 4.5 hours

Play music: about 4.5hoursO Headphone built-in battery: lithium battery-3.7V, 30mAhO Standby time: Theheadset is about 40 hours, and the charging case is about 260 hours of standby time