Adjustable SpeedThis electric engraver pen has 3-speed adjustable speed (5000RPM, 10000RPM, 18000RPM), suitable for different occasions. Usually low speed for metal/wood, fast speed for glass/ceramic. Rechargeable & Intelligent Power-offThe engraving pen is rechargeable by USB interface. Cordless use lasts up to 60 minutes after fully charged. The micro metal engraver pen is built-in safety protection circuit board and intelligent overload protection chip. too large, it will automatically cut off the power to avoid damaging the engraving pen. Really safe to use. Visible IndicatorEquipped with speed indicator light, electric quantity indicator light and overload indicator light, you can know the using situation of the engraver pen wireless in real time. You can adjust the working speed you want for different uses. Extensive UseThis mini engraving pen is small and exquisite, the whole machine weighs only 40g. with metal surface and pen design a comfortable feeling. It can more easily polish and engrave jade, metal, leather, wood, jewelry, glass, ceramics and stone. This engraving pen is made of high quality stainless steel and brass. high quality, powerful, compact and convenient, exquisite appearance. Features: 1. Intelligent Overload Protection: The intelligent overload protection chip would cut off the power when engraving to avoid damage to the motor and the engraving needle. 2. 3 Adjustable Speeds: It has 3 adjustable speeds, 5000-10000-18000RPM high speed rotation meets your different needs. 3. Easy to use: Just like a pen to use, beginners can easily master. 4. Applicable materials: wood, stone, peach pits, eggs, crafts, glass, ceramics, metal, plastic, etc. Specification: Clamping range: 2.35 mm Collar depth: 25mm Speed: 5000-10000-18000 Power: 10W Battery voltage: 4.2V Battery capacity: 300MA Size: 120mm*16mm What you will getOur engraving carve tool will come with 1 engraving pen, 20 rotary bits, 16 stencils, 3 saw blades and 1 rod and 1 charging cable of type C. These accessories are enough to be used for carving, grinding, engraving, milling, grinding, drilling, cutting.