Replaceable Grind Bits: Comes with six replaceable grinding bits, easy to change without the tools. Adjustable Speed: Supports three gears of speed, you can adjust the rotation speed (0-15000 RPM). Forward & Reverse Switching: The direction of the rotating bit is adjustable, you can choose forward or reverse. Lighting Function: With LEDs light, provides you more clear sight, more convenient to use. Convenient Carrying: Compact size, can be put into your handbag easily, convenient to carry. Long-lasting to Use: Fine workmanship and superier material, provides comfortable hand feel and long service life. Specifications: Material: ABS Color: Black, White, Red (Optional) Working Voltage: 3.7V Rated Powers: 0.5W Speed: 15000 RPM Working Time: 90mins Batterys Capacity: 500mAh Item Size: 156 * 21.5 * 20mm / 6.14 * 0.85 * 0.79in Item Weight: 53g / 1.87ounces Package Size: 202 * 82 * 41.6mm / 7.95 * 3.23 * 1.64in Package Weight: 200g / 7.05ounces Note: 1.Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures. 2.Please allow a little measuring deviation due to manual measurement. Package List: 1 * Nail Grinding Machine 6 * Grinding Bits with Storage Case 1 * USB Cable 1 * User Manual