Manicure Tool Sets features:Are you still worried about the rough nails? If so, our electric nail file kit is carefully prepared for you. Itis simple and convenient to use, which can help you decorate your nails well. Rechargeable, don't worry about running out of power. FeaturesColor:WhiteMaterial:ABS, ceramicSize: Approx.16.00X2.20X2.20cm/6.29X0.86X0.86in.-Charging Method: USB interfaceCharging Voltage: DC 5VWorking Voltage: 3.7VRated Power: 0.5WRotation Speed: 15000.RPMAdapt to the Grinding Head: 2.35mmBattery Capacity: 500mAhWorking Time: About 4 hours5different grinding heads are tailored to different nailconditions to meet your different needsIt can effectively solve the problems of uneven, dull and rough nailsNo need to use nail files or nail polish to make your nails smootherThe electric nail file is efficient and safe, and you can enjoy the nail art experience at homeUSB charging, whether at home or outdoor, charge at any time.