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 and 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. What You Will GetOur engraving carve tool will be delivered with 1 engraving pen, 20 rotary bits, 16 stencils, 3 saw blades (22mm, 25mm, 32mm) and 1 rod and 1 Type-C charging cable. These accessories are enough to be used for carving, grinding, engraving, milling, grinding, drilling, cutting.