Description: SIMPLE 3-SPEED ADJUSTMENT: One button to switch a rotation speed between 5000-15000 r/min, which adapts to different work situations. ENERGY SAVING: This USB cable powered electric drill is environmentally friendly, energy saving and easy to use. PORTABILITY AND CONVENIENCE: Supplied with a counter load protection against overload, make work safe and reliable; The ergonomic handle is for a comfortable grip, use anywhere anytime. VARIETY OF VARIETY OF BITS: The accessories help in carrying out different jobs such as drilling, grinding, engraving and others. Applicable stainless steel, porcelain, stone, glass, plastic, wood, bracelet, etc. Specification: Input voltage: 5V/2A Output power: 30W Speed: 5000-15000r/min Fixing diameter: 0.5-3.2 mm Material: Plastic and Mertal Size Chart: 16.8x2.5cm/6.61x0.98inch Package Includes: 1 Piece Mini Electric Grinder 1 Piece Tools Bag 1 Piece USB Cable Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!