1Rotating rate and rotating direction are adjustable, you can adjust it according to need. 2Can effectively polish your nail and reshape nail edge, help to create exquisite nail. 335000RPM, high rotating rate and powerful, quick nail grinding, good performance. 4Equipped with 4 different types of polishing head, easy to replace and use. 5High rotating rate and low noise, let you not be affected by noise, bring you a comfortable nail art experience. 6Digital display, you can clearly know the working state of the machine. 7Built-in battery, super strong power storage function, solve your troubles of charging, with USB cable interface, can be used as power bank for other electronic products. 8Adopts quality ABS material, eco-friendly and durable. Alloy material polishing pen, it won't get hot after long time use.