Feature: 1. Has 3 variable rotate speed, 5000rpm, 10000rpm and 15000rpm, and you can adjust the speed to adapt to different work conditions. 2. Can be flexibly applied for various types of household projects and manual tasks, such as sanding, grinding, engraving, polishing, etc. 3. 3.7V rechargeable lithium battery can work continuously for 90 minutes after 2 hours of charging, safe operation and long service life. 4. This set also includes sanding sleeve, saw blade, wool wheel, and many other grinding tools, making your DIY much more convenient. 5. Cordless design with small size and light weight ensures the flexibility in your working, and the 10W power also promise the efficiency. Specification: Item Type: Mini Electric Grinder Rotate Speed: 3 Gears (5000RPM, 10000RPM, 15000 RPM) Power: 10W Battery Type: Lithium Battery 18650 Battery Capacity: 380mAh (built in) Clamping Diameter: Approx. 0.5 ~ 3.2mm / 0.02 ~ 0.13in (change the chuck by yourself). . Package List: 1 x Mini Electric Grinder1 x Charging Cable (Random Colour)3 x Sanding Sleeve1 x Sanding Sleeve Reel2 x Wool Wheel1 x Wool Wheel Rod1 x Saw Blade1 x Saw Blade Rod2 x Grinding Needle (Random Style)5 x Collet5 x Flint Grinding Head3 x Drill Bit1 x Accessory Storage Box1 x User Manual Note: Charging Tips: When charging, the red light No. 1 will be on until the red light No. 1 turns green, indicating that it is fully charged; the red light flashes when the battery is exhausted.