Ergonomic handle of this screwdriver is comfortable to grip. It has over-current protection, voltage protection, over-temperature protection, charge and discharge protection for safe use. It comes with an LED light, so it can work easily in the dark. Featuring a magnetic suction design, this screwdriver allows quick switching of the bit head. It has 4 levels of torque adjustment with professional mechanical torque regulation. When the torque reaches the set level, the mechanical clutch disengages and slips, effectively preventing damage to screws or materials caused by over-tightening. It is constructed of ABS plastic material. The length of this product is 170mm. The diameter is 43mm. It is suitable for furniture assembly, kitchenware repair, screw tightening, computer appliance repair, and other applications. Item Name: Electric Screwdriver Material: ABS Plastic Features: Four Adjustable Torque Levels, Built-in Lithium Battery, USB Charging Battery: Built-in 1300mAh Lithium Battery Charging Time: 3 Hours Collet: 6.35mm (1/4") Rotational Speed: 200rpm Torque (Electric): 5Nm Rated Voltage: 3.6V LED Light: Yes Four-speed Torque: Adjustable Size Details: Length: 170mm / 6.69 in (Approx.) Diameter: 43mm / 1.69 in (Approx.) Notes: Due to differences in lighting and screen settings, the item's color may vary slightly from the images. Please allow slight dimensional differences due to manual measurement. Package Includes: Style 2pcs: 1 x Electric Screwdriver 1 x USB Charging Cable 2 x Bits or Style 20PCS: 1 x Electric Screwdriver 1 x USB Charging Cable 1 x Universal Flexible Shaft 1 x Bit Connecting Rod 18 x Bits