High Performance Brushless Endo Motor 6:1 Super mini contra-angle 360° rotatable contra-angle Wireless connection Full touch button design HD LCD display Wireless charging Built-in 2000mAh large Base: built in a 11.1V/2600mAh Li-ion battery pack, and charge voltage is 15Vd.c.,1.6A Motor handpiece: built in a 3.7V/2000mAh Li-ion battery pack Input: ~100V-240V 50/60Hz 800mA Output: DC15V/1.6A Torque rang: 0.4Ncm~5.0Ncm(4mNm~50mNm) Speed rang: 100rpm~1200rpm "Wireless charging: 112-205KHz " Maximum RF output power of the product: 9.46dBuA/m@3m