[USB WirelEngraving Machine]: Electric Engraving Pen Equipped with a rechargeable lithium battery, which can be charged via USB interface. After fully charged, wireluse can be idle for up to 30 minutes to give you a full experience easy to helpDo a better burn.[3 levels of adjustment]: The metal engraving pen is equipped with excellent motor and the power can reach 25W when working. 3-way adjustable speed 5000-25000 rpm. The lowest speed allows you to polish your nailssafe, and the highest speed can also be used for metal engraving.[Carving Art, Portable]: These portable and small engraving pens are easy to carry with you, so you can enjoy the simple time of handmade diamond jewelry making.[Best choice for beginners]: Our metal carving tools are easy to use and especially suitable for beginners. Make keychains, DIY necklaces or send gifts with our kits.[Wide Application Scenarios]: Electric engraving pen can work on metal, glass, ceramics, leather, wood, jewelry, stone or statues, suitable for different occasions. >Detailed description:Description: Packaging method: corrugated cardboardPacking size: 20*14*4cmProduct accessories: 1 engraving pen, 1 data cable, 30 rotation positions 2.35, 2 drills (1.0mm, 1.5mm), 3 stainlsteel cutting discs (22mm, 25mm, 32mm), 1 handle bar 2, 35