Electric engraving machine - 3 speed settings - Cordless engraving tool - Suitable for jewelry, wood, glass and stone

[Portable and USB Rechargeable] The engraving pen is rechargeable and comes with a USB cable. Once fully charged, it offers up to 30 minutes of cordless use, allowing you to engrave more efficiently. It can be powered by any device with a USB port. [3 Adjustable Speeds] This rechargeable micro-engraving machine has three adjustable speeds, from 5,000 to 18,000 RPM, suitable for different materials. Press once for 5,000 RPM, twice for 10,000 RPM, and three times for 18,000 RPM. [Quiet] This cordless rotary tool operates with minimal noise, even while sleeping. It is ideal for beginners and professionals alike, for use anytime, anywhere, to create unique works of art. [Intelligent Overload Protection] The rechargeable metal engraving pen features a built-in overload protection chip that automatically shuts off when the resistance reaches an excessive level. [Versatile Engraving Kit] This hand engraving kit can engrave in seconds and decorate almost any surface, including metal, ceramic, wood, leather, stone, etc.