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.