Upgraded USB Interface and Compact and Convenient Design - Standard USB interface allows you to plug in any USB socket easily，such as power bank ,laptop，AC adapter and even car charger,it is the perfect match for travel and carry out.No built-in battery, compact size makes it very easy to use anytime anywhere | Adjustable Speed and Easy to Use - Up to 20,000RPM with a speed control button,which makes this electric nail file easier to polish your nails, adjust the speed or forward and reverse rotation direction as you want.Idea for beginner use | High Quality Material and Low Noise and Low Heat - The electric file has a powerful but quiet motor ,high quality aluminum alloy body and high efficiency heat dissipation keep it a low heat,low vibration,which providing you a comfortable experience while doing your nails | Multi-Function Nail Drill -It used for carving, polishing, shaping, engraving, cutting, mold grinding, sharpening, sanding, removing calluses, and it is even perfect for pet nail sanding | Professional Nail Drill Kit - Designed with 6 optional standard metal bits, 26pcs sanding bands and nail art brush,which are suitable for grinding, carving, cutting, polishing for all nail arts as well as cuticle removal.Our OVX perfect kit will save you time and help you make a beautiful nail.If any problems arise with our product, please contact us without delay. We commit to responding within 24 hours and endeavor to assist you in finding a prompt solution