Engraving any surface】: The engraving pen adopts Japanese motor, which can reach 23000rpm, allowing you to engrave on the surface of metal, wood, glass, stone, ceramics and hard material objects. 【Tool DIY Engraving Tool With】: With durable diamond tip, high strength and wear resistance, the engraving pen can be used for painting, polishing, engraving, cutting, marking , grinding. A great DIY tool or gift for engraving enthusiasts, artists, beginners, etc. 【Battery Operated】: Powered by 2 x AAA batteries, it will start to work when you press the red button, very easy to use (batteries are not included). 【Ergonomic Design】: Just hold it like a pen, comfortable, easy and effortless hand feeling to finish your art work. 【Portable and lightweight】: Small size, easy to put in your pocket or bag. How to use: 1.Turn on the top cap and insert 2 AAA batteries. 2.Press the red button of the engraving pen, then it can start to work. Features: Color: black / blue / red / gold / silver (optional)