This nail art grinding machine kit is used for grinding, sanding, polishing, etc. It is very suitable for natural nails. Ideal tool kit for professional use or home use, it's very lightweight, you can take it when you go to travel or outside, very convenient. Features - Color: White - Material: ABS - Size: 15.60X2.15X2.00cm/6.13X0.84X0.79inch. - Charging method USB port/DC 5V - Working voltage: 3.7V - Rated power: 0.5W - Rotation speed: 15000, - Adapt to the grinding head: 2.35 mm - Battery capacity: 500mAh - Approximate working hours: 90Min - Light weight, low noise, easy to replace bits without any tools. Pen shape, handy to operate. - Make it easier and safer to polish your nails. Effectively treat both delicate areas and rough . - It works safely with steady vibration, low heat and low noise, great for doing beautiful acrylic nails. - Great for manicure and pedicure care, fit for shaping, polishing, removing , etc. - Professional nail drill machine, suitable for professional salon use or family use. Package list: 1 x host 1 x USB cable 5 x grinding head