Bluetooth version:V5.0
Bluetooth operations distance:20M
Battery capacity:135mAh
Drive unit:10MM
Impedance:32ω(±15%)
Standby time:4500 hours max.
Working voltage:5v/500mA
Talk time: 30 hours
Music time: 24 hours
Charging time:2.5 hours
Packing+earbuds+USB charging cable