Product selling point: 1. Comfortable grip A well-designed engraver pen allows you to use it as a pencil for a comfortable feel, better control, and precise engraving. 2. Reliable quality made of high strength metal and selected electronic components with wear resistance, wear resistance and long life. 3. High efficiency The speed of this carving pen is up to 5000-15000r/min, carving effect is efficient, three levels of adjustable, making engraving easier. 4. Rechargeable engraving pen Electric engraving pen is powered by lithium battery, 700mah battery capacity, can be charged and used. No more disposable batteries! 5. Wide range of applications: Pens can be used to carve metal, ceramic, wood, pebbles, plastic, etc., suitable for DIY projects or craft purposes. Parameters: Type: Engraving pen Speed adjustment: three gears adjustable Speed: 5000-15000r/min Power Supply: USB charging Voltage: 3.6V Color: black blue Size: 18*6*4.5cm Battery capacity: 700mah Charging time: 2-3h Full use time: about 1 hour A The package includes: 1* Carving pen 1*USB charging cable 1* Instruction B Package includes: 1* Carving pen 1*USB charging cable 1* wrench 1* instruction 12* acceories C Package includes: 1* Carving pen 1*USB charging cable 1* instruction 47* grinding head acceories