2) 3 Mode adjustment, you can choose the right one. 

3) 2200mAhlarge capacity rechargeable lithium battery, 2-3 hours
standby.

4) It has safety protection devices such as over protection,which is safe to use. 

5) Suitable for fatigue recovery after
exercise, recovery after sports injury , pain relief during surgery recovery, and reduction of inflammatory response.

6) Motor:
12V,46S,3500±10%rpm Frequency: 1 speed:1700±10%rpm 2 speed:2100±10%rpm 3 speed:2500±10%rpm 4 speed:2900±10%rpm 5 speed:3300±10%rpm
Li-on battery: 11.1V Battery disassembly: NO Charging time: 3.5hours Switching mode Power switch+screen button Gear position: 5
speed adjustment