PLEASE NOTE: This is a cordle Drill and can be used wirelely after chargingEngraving Pen USB Charging Variable Speed Mini Grinder Machine Rotary Tools Kit Grinder Set with Engraving Acceories Kit* SIMPLE 3 SPEEDS ADJUSTMENT: One button to switch rotation speed among 5000-15000r/min, which adapt to different working situation.* ENERGY SAVING: This electric drills powered by USB cable, which is eco-friendly, energy saving and convenient to use.* PORTABILITY AND CONVENIENCE: Provided with the overload protection, let the work become safe and reliable; Ergonomics handle is for comfortable gripping, use anywhere anytime.* VARIETY OF BITS ASSORTMENT: The acceories helps do different work like drilling holes, grinding, graving and others.* Applicable to stainle steel, porcelain, stone, gla, plastic, wood, bracelet, etc. Our electric drills are suitable for most sizes, and the adapter head can be changed according to the size of the tool, which can be purchased in the acceories How to use it please see! - Input Voltage: 5V/2A - Output Power: 30W - Speed: 5000-15000r/min - Clamping Dia: 0.5-3.2mm - Size: Approx. 183x25mm - Perfect For: Sanding, grinding, polishing, deburring, engraving, dust removing, drilling and more.We provide different specifications for you to easily choose what you want, Electric Drill + an adapter line, Electric Drill + an adapter line + 100 acceories, Electric Drill + an adapter line + 200 acceories, Electric Drill + an adapter line + 223 acceories, Electric Drill + an adapter line + 242 acceories