This metal engraver pen equips with an excellent motor and a Lithium battery and is rechargeable by a USB interface., power up to10W while working<br> The engraving pen has a power indicator and an overload indicator, which can know the usage of the engraving pen in real time<br> Portable and simple machine for any such as jewelry, wood, plastic, glass, leather, metal and stone engraving<br> 3 speeds: 5,000 to 18000 RPM output makes the rotary tool more prominent. Three gear selection can apply to different situations precisely, and make your projects easier and more professional.<br> Clamping Range: 2.35mm<br> Chuck Depth: 25mm<br> Rotational Speed: 5000-10000-18000<br> Power: 10W<br> Battery Voltage: 4.2V<br> Battery Capacity:300mah<br> Weight:40g<br> Length:120mm<br> Width:16mm<br> Color:Rose Gold<br> Material:Metal<br> Package Contents:<br> 1 * Engraving pen<br> 1 * USB power cable<br> 2 * Drill bits<br> 3 * Saw blades<br> 30 * grinding head<br> 1 * Connecting rod<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.