Features: USB charging port for fast charging, can be used while charging in case of no power on the body. Intelligent digital display screen can check the usage status of the electric mill. Press the decrease gear button to decrease one gear, and press the increase gear button to increase one gear. Intelligent start stop key start, intelligent usage time start, intelligent battery display. Builtin reinforced motor with strong power and fast speed. Specifications: Material:Metal,ABS Input Voltages:5V Power:80W Charge:USB C Battery:2000mAhx2 5 Gear Speed:2500-4000-6000-9000-12000RPM Length:Approx.190mm/7.48'' Package Includes: 1Set Cordless Rotary Tool note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.