Main part:
1. Rated voltage range: 110-120V,220-240V 50/60HZ
2. Rated power input : 15 W
3. Output rated voltage: DC 3--18V
4. Output current: 0.8A

Hand-piece (motor) part:
1. Working voltage: DC 30-18V
2. Rated current: 0.8A
3. No load speed: 29000-30000 RPM
4. Load Speed: 27000-28000 RPM