LCD DISPLAY HD: This electronic nail machine with built-in 2000 mAh lithium battery, when fully charged for about 2 hours, the electric nail file will work up to 12 hours. The LCD display of the nail drill shows the speed, rotation direction and remaining power. After charging, you can also use it as a power bank when your phone needs power. HIGH TORQUE OF 45000 RPM: The professional nail drill machine is equipped with high quality bearings, allowing it to run smoothly at a high and adjustable speed from 0 to 45000 RPM. This acrylic nail drill is ideal for beginners and professionals. MULTIFUNCTIONAL KIT: Amazing electric nail drill for polishing nails, filing various nail shape and smoothing calluses or hardened skin on your hands and feet. Designed with 6 kinds of metal bits and 6 sanding belts (also works with all kinds of 3/32"" shank bits). HIGH QUALITY TORQUE: The rechargeable nail drill comes with the feature of high precision and superior torque to avoid occasional stalling when proper pressure is applied. bits, more safety and operating efficiency. COMPACT AND LIGHTWEIGHT DESIGN: The nail drill is made of special aluminum alloy materials and the wide ventilation holes are designed to dissipate heat effectively and lighter. The professional nail drill comes with the portable hook that can be put in your pocket/bag.