This is a kind of electric screwdriver set, include one electric screwdriver and 19pcs bits. Non-contact measuring design, forward and reverse operation, useful and practical. Support measuring electricity in the wall, if the electricity is detected, a red indicator light will light up and with alarm sound. 250r/min no-load speed, 3.0Nm maximum torque, help improve work efficiency. You can have a try.   Features: Compact design, support one-hand operation, with comfortable grip feeling.  Non-contact measuring design, forward and reverse operation, useful and practical.  Support measuring electricity in the wall, if the electricity is detected, a red indicator light will light up and with alarm sound.  250r/min no-load speed, 3.0Nm maximum torque, help improve work efficiency.  LED lights design, perfect for working on the dark area, double lights on the headpart for easy working, and one tail light for easy observation at night.  4mm/6.35mm hexagon socket for holds all kinds of bits with 4mm and 6.35mm diameter.  USB rechargeable design, built-in 4V, 2000mAh battery, fully recharge can provide long working time.  Comes with 19 pieces bits, you can choose according to your demands.   Specifications: Name: Electric Screwdriver;  Material: metal;  Battery: 1 * rechargeable battery, 4V, 2000mAh (included);  Item size: 35 * 177mm / 1.38 * 6.97in;  Item weight: 266g / 9.38ounce;  Package size: 220 * 110 * 50mm / 8.66 * 4.33 * 1.97in;  Package weight: 300g / 10.58ounce;   Packing List: 1 * Electric Screwdriver;  19 * Bits