Feature: Strong magnetic motor, the maximum speed can reach 200rpm. With the all metal , 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 . 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 3 LED lights provide enough bright spots. Product Specification: Specification: 36 in 1 Battery Capacity: 350mAh Charging Time: Less than60mins Battery Type: Li Battery Electric Torque: 0.15-0.35N.m Voltage: 3.7V-DC Free Speed: 200rpm/min Manual Torqye: 5N.m Material: Aluminum alloy colour: black gray + red Package Contents: 1 x Screwdriver Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.