37000 Rotation PRM, Steady and Continuous Power for engraving kinds of DIY Crafts. Design of idea is reducing fatigue and increasing comfortable,the flexbile cap accessory to improve steadily when you working.easy to change the battery quickly. 12000 mAh Capacity and USB Quickly Recharger ability ensured the full-working and bring you carving experience of funny. Suitable for multi-purprose likes Glass,Wood,Stone,Jewelry,,Metal to carve,sand,cut when you or office. portable.Light Weight that you are conviention with travling or walking outdoor., Weight: 0.63162438063 Pounds, Manufacturer: Hipzeepo