1. This product is an electric screwdriver, built-in lithium battery, non-removable. 2. This product is located in general household, not suitable for high-intensity use 3. Insert chuck with built-in magnet.Match with a drill bit.There be a slight when drill bit is inserted, and of drill bit be uneven during operation, which does not affect actual use. 4. The drills in package are normal drills.USB port charging, factory standard charging cable.All packages are without charging head. 5. Motor all copper movement, high speed, high torque Attention: 1. This product can drill holes in wood and plastic. 2. Do not drill: hard materials such as walls, tiles, concrete and iron. 3. This product is targeted for general household use, not suitable for high intensity use. Name: electric screwdriver Scope of application: all kinds of maintenance computer, all kinds of loading and unloading screws Voltage range: AC single-phase, DC 50V or more than 250V or less Maximum screw: diameter 6.35mm Power