1.Version:V5.3
2.Power input:5V 1A
3.Driving unit:13mm
4.Sensitivity:120±5dB
5.Frequency response:20-20000Hz
6.Impedance:32Ω
7. Battery power of earphone: 40mAh*2
8.Battery capacity of charging chamber: 300mAh
9.Playing time: about 3-4h
10. Charging time of earphone: About 1H
11. Charging time of battery compartment: About 2H
12. Signal distance: 10M