1. Convenient for 3-speed speed adjustment: 5000-15000r/min one-key switch speed, adapt to different working conditions.2. Energy saving: This electric drill is powered by a USB cable, which is environmentally friendly, energy-saving and easy to use.3. Convenient and portable: It is equipped with overload protection, which makes the work safe and reliable; the ergonomic handle makes the grip feel comfortable and can be used anytime, anywhere.4. Diversity of the range of drill bits: accessories help to complete different tasks, such as drilling, grinding, engraving, etc.5. Suitable for stainless steel, porcelain, stone, glass, plastic, wood, bracelets, etc.Input voltage: 5V/2AOutput power: 30WSpeed: 5000-15000r/minClamping diameter: 0.5-3.2mmPerfectly suitable for: grinding, grinding, polishing, deburring, engraving, dust removal, drilling, etc.colour:BlackMaterial:Metalsize:168 x 25mmPackage Contents:1 x black rotary machine tool5 x brass chuck (1.0, 1.5, 2.0, 2.5, 3.0)3 x grinding head6 x drill bits1 x mini wrench1 x USB data cableOnly the above package content, other products are not included.Note: Light shooting 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.