Feature:1. Automatic Power Off: When the working resistance of the engraving pen is too large, it will automatically cut off the power supply to prevent damage to the engraving pen, and it is very safe to use.2. USB Charging: Our engraving tools are rechargeable, which is very convenient to use, and can also be used with a charging cable if you need to work for a long time.3. Low Noise: The noise of this electric engraving machine is very low, so you don't have to worry about affecting the rest of your family.4. Compact and Portable: The body of our engraving tool is light and compact so you can take it anywhere, it is a portable engraving tool that allows you to create one of a kind, personalized accessories and gifts.5. High Performance Motor: The engraving pen features an improved high performance 18000RPM motor that provides better control and handling than many other motors on the market.6. Easy Installation: The engraving pen's lightweight aluminum frame and ergonomic grip give you precise fingertip control, so it's super easy to use and perfect for beginners or professionals.Specification:Item Type: Electric Engraving PenMaterial: Aluminum alloyModel: E108Battery: 1 x 4.2V lithium battery(built in)Battery Capacity: 300mAh Speed: 5000rpm (low speed),10000rpm (medium speed),18000rpm (high speed)Power: 10W.Package List:1 x Electric Engraving Pen30 x Grinding Head1 x USB Cable1 x Grinding Head Storage Box1 x Instruction1 x Connecting Rod3 x Cutting Disk2 x Drill Bits16 x Engraving TemplateNote:If you need to work for a long time, it can be used while charging