Material: Plastic body, metal handle Color: gray, silver, black Packaging size: 21.5*16.1*5.1 CM Packaging contents: Host*1, grinder*1, Type-C charging cable*1, connecting cable*1, metal Polishing head*15, instruction manual*1 Power supply: 2600ma/h Rechargeable charging method: Type-C Charging speed: 0~35000rpm 1. The design of the cordless professional nail polishing machine is simple and easy to use, suitable for technicians and customers of any technical level, combined with Design, precise and humanized control, suitable for commercial or home use 2. Can run up to 10-12 hours after fully charged, with Led display, adjustable speed. Just rotate it gently and the speed can be changed at will. Not only does it have the function of polishing nails, it can also be used as a mobile phone power bank. 3. By easily rotating the variable speed control knob, it can work at a high adjustable speed of 0-35000rpm, truly achieving low heat, low noise, and low vibration. The LCD screen can clearly display the speed and power status, making it easy to control and use. 4. Equipped with 15 grinding heads and 1 dust removal brush. For engraving, engraving, milling, grinding, sharpening, sanding, cutting, polishing, drilling. 5. Warm reminder: This electric nail polisher is equipped with a safety protection system. When the overload protection function is activated, it will stop working to avoid overheating due to improper operation. Please turn off the power and check if there is any improper operation of the phone, such as the drill bit is not locked when the machine is started. After completing all checks, reinstall the machine and continue using it.