Effectively prevents needle breakage Adopt real-time feedback technology and dynamic torque control. Realizing automatic reverse and effectively prevents fracture. Imported Motor 15.5:1 reduction ratio endows strong power and effective cutting. Durable planet gear gearbox prolongs service life of device. Wireless battery charging Avoid poor contact problem of traditional contact charging. Built-in battery, charging by putting handpiece in charging base. Automatic torque calibration Choose torque calibrating mode to automatically calibrate torque. Reducing the torque fluctuation caused by contra-angle replacement or sterilization under high temperature and high pressure. Customization Under each mode, continuous motion, reciprocating motion, and reverse motion are for options. Torque and speed are adjustable. Nimble Contra-angle Contra-angle can be autoclaved to avoid cross-infection. Adjustable angle make it available for different teeth positions. Small and exquisite head provides unobstructed views. Effectively prevents needle breakage Imported Motor Wireless battery charging Automatic torque calibration Customization Nimble Contra-angle KEY SPECIFICATION: Continuous Motion mode Reciprocating Motion mode Wireless Charging ONE