The 16.8V electric screwdriver can quickly tighten or loosen screws, providing enough power to complete most household or industrial applications. The use of a strong magnetics brushless motor, with 55Nm large torque, 1500rpm high rotation speed which does not generate sparks when it is working. There are two kinds of speed control modes, 2 gears adjustment and stepless speed adjustment for you get the speed you want. Torque adjustable design, with stable torque output. Using an electric screwdriver can increase efficiency and reduce the fatigue and time costs of manual operation for different types of screws. Suitable for tightening screws in the home in all scenarios: such as the installation of lamps, household appliances, door locks and other disassembly.​ Features: 【Premium Material】: Simple and fashionable, made of engineering plastics material, innovative integrated structure, with ergonomic anti-slip handle, easy to grip and with comfortable hand feeling, practical and labor-saving. 【Quality Bearings Design】: Full metal gear and bearings are manufactured suing the high carbon hardness steel and quenching heat hardening process for maximum accuracy and stability, easy and accurate to find the position. 【Brushless Motor】: The use of a strong magnetics brushless motor, with 55Nm large torque, 1500rpm high rotation speed which does not generate sparks when it is working, and the motor does not wear, can provides long service time, and greatly enhances the working efficiency. 【Multi-shift Torque Adjustment】: Torque adjustable design, easy adjustment, stable torque output, can satisfied with all your demands. 【Two-speed Regulation Modes】: There are two kinds of speed control modes, 2 gears adjustment and stepless speed adjustment for you get the speed you want. 【LED Light & Indicator Light】: Built-in LED working light, it will opens automatically when the trigger is pressed, and can provides illumination in dark spaces, more convenient to use. And with 3 power indicator lights to remaind you recharging in time. 【Cooling System】: Reserved several ventilation cooling holes, efficient heat dissipation, will not hot for working long time. Specifications: Name: Electric Screwdriver Material: plastics Battery: no battery, 1pcs battery, 2pcs batteries (optional) Host: no battery 1pcs battery: 1 * 16.8V, 1300mAh lithium battery (included) 2pcs batteries: 2 * 16.8V, 1300mAh lithium battery (included) Rotation speed: 1500rpm Max torque: 55Nm Item size: Host: 186 * 115 * 57mm / 7.32 * 4.53 * 2.24in Host with battery: 210 * 116 * 57mm / 8.27 * 4.57 * 2.24in Item weight: Host: 567g / 1.25lb 1pcs battery: 838g / 1.85lb 2pcs batteries: 1043g / 2.30lb Package size: 216 * 167 * 90mm / 8.50 * 6.57 * 3.54in Package weight: Host: 665g / 1.47lb 1pcs battery: 937g / 2.07lb 2pcs batteries: 1130g / 2.49lb Packing List (host): 1 * Electric Screwdriver OR Packing List (1pcs battery): 1 * Electric Screwdriver 1 * Battery 1 * Battery Adapter OR Packing List (2pcs batteries): 1 * Electric Screwdriver 2 * Battery 1 * Battery Adapter