08 Electric Engraving Pen, Rechargeable Cordless Engraver with 4.Lithium Battery, Lightweight Aluminum Alloy Ergonomic Grip, for Jewelry Glass W

Automatic Power Off: When the working resistance of the engraving pen is too large, it will automatically cut off the power supply to prevent damage to the engraving pen, and it is very safe to use. USB Charging: Our engraving tools are rechargeable, which is very convenient to use, and can also be used with a charging cable if you need to work for a time. Low Noise: The noise of this electric engraving machine is very low, so you don t have to worry about affecting the rest of your family. Item Type: Electric Engraving Pen Material: Aluminum alloy Model: E108 Battery: 1 x 4.2V lithium battery(built in) Battery Capacity: 300mAh Speed: 5000rpm (low speed),10000rpm (medium speed),18000rpm (high speed) Power: 10W