Voltage: 20V(MAX)
Stroke fequency:10000-20000 t/min
5 levels adjustable(t/min ):
Level 1: 10000
Level 2:12000
Level 3 :15000
Level 4:18000
Level 5: 20000
No-load speed:5000-9000RPM
Shock absorption,No hand numbness (during use)