Specifications Product Name:MS-901 Nail Polisher Motor speed:0~45000RPM Product Color:white,green,champagne Host size: 13.6*6.7*3.5CM (manual measurement, error 1-2CM) Power supply: 4000mAh Grinder size: 2.3*14cm Feature: 1.High power adjustable High Speed 45000 RPM:The nail drill is equipped with a high-quality motor, which allows you to work without problems even at a high speed (adjustable 0-55000 RPM). Supports forward and reverse control,and is suitable for left-handers or right-handers. 2.4000mAh High-Capacity/Rechargeable and Cordless:Smarter Speed and Battery LCD Display: Being charged for about 1 hours, and continuous use up to 15 hours without cord. Equipped with smart LCD Display, which can show clearly the suitable RPM to choose and accurate battery remaining capacity to recharge,It can also be used as a power bank to charge your phone. 3.Low Noise and Low Heat:This electro file is with a powerful yet quiet motor. Also, the smart heat dissipation can avoid overheating efficiently. (no more than 20 minutes of continuous use each time is recommended). 4.Portable and Light:Compact and lightweight design make it easy to carry and portable to bring it out, you can so your nail art work anytime anywhere. 5.New Upgrade Version:Comes with an upgrade USB interface cord, it is easy for you to use it with any USB socket, such as power bank, laptop, AC adapter, and even your car charger. Packing Include: 1 * Grinder host 1 * hook 1 * connecting wire 1 * metal grinding head 1 * handle 1 * manual 1 * Type-C charging cable