Feature● Strong magnetic motor, the maximum speed can reach 200rpm. With the all metal gear box, the concentricity of the bits is less than 0.2mm when rotating, which can effectively improve the finishing efficiency.● Small size, built-in rechargeable lithium battery, long service life and 400+ precision screws can be hit when fully charged.● Integrated aluminum alloy shell, anodized aluminum alloy process is antiskid, sweat resistant and not easy to rust.● 13 battery safety tests & 3 charging protection is safer● 3 LED lights provide enough bright spots.