Product Feature HD LCD Display: This electronic nail machine with a built-in 3000mAh lithium battery, Being fully charged for about 2 hours, the nail filer electric will work up to 12 hours. The nail drill LCD displays the speed, rotation direction, and remaining power. After charged you can also use it as a power bank when your phone need power. High Speed up to 35000 RPM: Professional Nail drill machine is equipped with high quality bearings, which enables it work smoothly at a high and adjustable speed 0-35000RPM, Easy speed control and is suitable for left-handers or right-handers. Low heat, low noise, super low vibration, powerful and smooth. This acrylic nail drill is great for beginners and professionals. Multifunctional Nail Kit: Electric nail drill awesome for nail buffing, filing the shape of various nails, and smoothing calluses or hardened skin on your hands and feet. The nail drill is made of special aluminum alloy materials and ample ventilation holes are designed for dissipating the heat effectively and more lightweight. The professional nail drill comes with the portable hook that can be put in your pocket/bag. Product Specifications: Input voltage: 5V/2A Motor voltage: 12V Handle diameter: 2.35MM Color: silver Speed: 0~35000 rpm Power supply: 2600 ma/h rechargeable Features: LCD high-definition display / can be used as a power bank / double-sided buckle