Features: Lightweight and portable, cordless design for easy operation, which is convenient to do detailed engraving. Elegant and exquisite appearance design, streamlined design fully reflects the concept ofergonomics. Compact structure, solid and firm, practical and can provide high working efficient. Copper motor design, strong and powerful, with high concentricity. Three gears ofspeed adjustable: 6000r/min, 9000r/min, 15000r/m, you can adjust the working speed you want for different usage. USB rechargeable design, support recharging while using, with stable working performance. Cooperate with different cutting heads, it can be used to carving glass, wood, egg, peach pit and metal lettering. Widely applications, perfect for grinding, polishing, micro-caving, micro-cutting, micro-drilling use.