Describ:Product name:Engraving PenColor:as picture showMaterial:aluminiumClamping range :2.35mmChuck depth :25mmPower :10WBattery voltage :3.7VBattery capacity :500mAHLength :120mmWidth :16mmThe package includes:1 x Engraving pen30 x engraving bits1 x charging cable2 x drill bits1 x connecting stick3 x saw bits1 x polish bit4 x stencilFeature:1. Comfortable grip - The well-designed engraver pen allows you to use it like a pencil for a comfortable feel, better control and precise engraving.2. Reliable quality, high strength metal and selected electronic parts, wear resistance, wear resistance, long service life.3. Easy to use - cordle engraving pen can work without a plug, eliminating the problem of wire confusion.4. High efficiency - This engraving pen can provide up to 5000-25000r/min high speed, providing efficient engraving effect, there are three levels of adjustable, making engraving easier.5. Great for Beginners: With an aluminium body weighing only 40g and a qualified pure copper motor, this engraving pen can work with low noise. This portable and compact etcher engraver tool is convenient and allows you to enjoy relaxing hand-drill jewelry making time anywhere and anytime you want.6. Wide application. Suitable for wood, stone, peach stone, eggs, crafts, gla, ceramics, carving tools, sporting goods, toys, mobile phone chargers and exquisite jewelry, watches, glaware and other materials of engraving and grinding.7. Intelligent overload protection chip, cut off the power when engraving stall, avoid damage to the motor and engraving needle.