Features: 1.Large and adjustable color lcd screen 2.Original switzerland electro-motor 3. Special connector for medical treatment 4. Drive-1:1 contra angle 5.Nine types of rotation settings125~625 rpm ten types of torque settings6~40 mn¡¤m 6. 9 programs to be set and memorized automatically 7. Multi-frequency operating system for apex location, ensuring the accurate measurement In any condition 8.Four types of rotation modes: auto start, auto stop, auto reverse, auto apical slow down, avoiding reamer-breaking and bringing more convenience 9.Self calibration of the rotation speed or torque 10. High capacity rechargeable battery with longer duration 11.Auto power off completely, extending the duration of battery 12.Ergonomics design with elegant appearance to bring the convenient operation. Technical specifications: 1. Adaptor voltage: Input 100-240v ac 50/60hz Output 10v dc 1.5a 2. Battery: rechargeable li-ion battery: dc 7.4v 1200mah 3. Power: 5w 4. Current: 500ma 5. Rotation speed: 125-625rpm 6. Torque: 0.6-4.0 ncm ( 6-40 mnm) 7. Ambient temperature: +4 c~+45 c 8. Relative humidity range: 85% or 90%rh 9. Atmospheric pressure: 86kpa~106kpa