Electric Micro-Engraving Pen USB Rechargeable Engraving Machine With 36 Bits, Portable Mini Engraving Tool [USB Charging Wireless Engraving]Our cordless engraving pen is equipped with a Type-C charging cable, which is convenient for fast charging, fully charged in more than 1 hour, and a long-lasting lithium battery, which can work continuously for 2 hours under normal conditions. Cordless operation is more convenient, USB can be connected to various USB interfaces such as charging treasure, charging plug and so on. [Complete and rich accessories]Our small engraving pen kit includes 30 grinding heads, 2 drills, 1 shank, 3 stainless steel cutting discs of different sizes, 2 engraving needles, 1 wrench and 1 socket head cap screw, easy to install and use Easy to learn and very friendly for beginners. [very wide application]This jewelry engraving machine easy to carry,supports you to engrave, engrave, sand, polish, etch, grind, grind, drill, cut, and more on your metal, glass, ceramic, leather, wood, jewelry, stone, or figurine pieces for your ease and enjoyment Handmade fun.Great for marking jewelry or other small items like rings, pendants, etc. [high performance 25000 r/min] Working power up to 25W, 3-level speed range (5000-25000 r/min), the speed can be adjusted according to the different carving materials, the use of silent bearings can effectively reduce noise and vibration, very practical, allowing you to enjoy artistic carving quietly . [safe to use] There are instructions in the product package, please read the instructions before use, this is not a baby toy, please keep it out of the reach of the baby. Material: Metal + Plastic colour: As shown Package Contents: 30 x grinding heads 2 x drills 1 x shank 3 x stainless steel cutting discs of different sizes 2 x engraving needles 1 x wrench 1 x socket head cap screw Only the above package content, other products are not included. Note: Light reflection 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.