● POWER: The engraved pen powerful 20,000 Rpm motor is powered by just two aaa batteries and enables engraving in Metal, Wood, Plastic, Leather, metal, ceramic and plastic. ● HIGH QUALITY: The head of pen engraver machine (1mm) is made of high strength, super wear resistant and impact resistant diamond, and has a longer service life. The body is made of aluminum. compact engraver has ergonomic tri-lobal grip and precise fingertip control. ● EASY TO USE: Hold the diy engraver pen like a pencil with your thumb over the control button, applying slight pressure on the surfaces. ● LIGHTWEIGHT AND ERGONOMIC DESIGN: Small size, light weight and easy to carry, you could hold the precision carving tools like a pen to do complex work without excessive stress on your wrist or hand. ● NOT CONTAIN BATTERY: The mini engraving pen is portable. Pocket clip design is convenient to carry. Due to the safety of delivery, there is no battery (should be AAA) inside.