Specification Product Namerechargeable USB engraving pen Color: silver, gold Size: 11.8*1.8cm Power supply mode: USB charging Working rate: 10W Revolutions per minute: 5000-10000-18000RPM Rated voltage: 3.7V Description USB rechargeable: Our engraving pen is USB rechargeable. With up to 30 minutes of cordless use after charging, it can meet most of your needs for DIY projects anywhere, anytime. Intelligent power-off protection: Rechargeable USB type-C rechargeable metal engraving pen with built-in overload protection chip, automatic power-off protection when the resistance is too high, extending the life of the engraver. Ergonomic design: The engraving tool is held like a pen with an ergonomic trefoil handle and fingertip controls. The soft rubber coated handle creates less fatigue during operation for comfortable and precise operation. 3 STAGE ADJUSTABLE: With 3 levels of adjustable speed (5000-10000-18000RPM), you can adjust the working speed for different applications. Wide range of applications: This etching tool supports you to beautify and engrave on any material supplier, such as glass, wood, egg, plastic, jewelry, ceramic, leather, ring, etc. You can use this tool to engrave, sand, polish, drill and cut Product list. Standard version. 1*Engraving pen 30*sanding head 3*Stainless steel cutting blades (22mm, 25mm, 32mm) 1*Handle pin 2*drill bit 1*USB data cable Engraving version. 1*Engraving pen 20*sanding head 3*Stainless steel cutting blades (22mm, 25mm, 32mm) 1*Handle pin 16*Engraving Template 1*USB data cable