Features: 1The metal bearings run smoothly and have a long service life without being hot. 2The metal surface body is exquisite and compact, with low noise, suitable for stable and long-term operation, and is not easy to fatigue when used. 3It can rotate forward and reverse to adjust the speed. It has the functions of grinding, polishing, removing nail, removing dead skin, removing calluses, pedicure, carving arc, etc. 4USB interface portable nail polisher, you can use mobile phone socket charger, computer, power bank and other interfaces, convenient and fast charge. 5Powerful motor 0-20000 rpm, quickly polish your nails, perfect for nail art use. Condition: 100% New Item Type: Set Color: Gray Material: Aluminum Alloy Applicable To: Household, nail salon, etc. Speed: 0-20000 rpm Rotating direction: forward, reverse, switch at will Power supply: USB interface power supply, you can use mobile phone socket charger, computer, power bank and other interfaces Uses: It has the functions of grinding, polishing, removing nails, removing dead skin, removing calluses, pedicure, carving arc, etc Package Included: 1 x Pen1 x Box of Polishing Head1 x USB Cable