Features: Adjustable Speed: This professional nail drill machine is equipped with high-quality bearing, which enables it work smoothly at a high and adjustable speed (00-35RPM) by rotating the speed control knob easily. LED Display Screen: Large LED display shows the working speed, rotation direction, and remaining power clearly. There are forward and reverse rotation directions, suitable for left and right hands. Rechargeable Battery: Designed with a high-quality aluminum alloy comfortable hand piece, the nail drill machine with a built-in 2600 mAh lithium battery can last 4 hours but just need 1 hours to charge. Great Design: Portable and convenient, its size is small, you can take it easily. And this nail drill machine comes with a clip on the back which could hang on your clothes, or put it in your pocket or bag. Multi Uses & Professional Nail Drill Kit: The electric nail file comes with 6 different metal drill bits and 6 pcs sand bands for buffering, grinding, sharpening, extension gels removing, and calluses smoothing. Specifications: Material: ABS + Aluminum Alloy Color: White Power: 36W Type: US / EU Plug (Optional) Voltage: 12V/2A Input: 100-240V, 50-60Hz Battery Capacity: 2600mAh Rotary Speed: 0 - 35000RPM Item Size: 16.5 * 7.5 * 3.5cm/ 6.5 * 3 * 1.4in (Gringding Machine Host) Item Weight: 227g/ 8oz (Gringding Machine Host) Package Size: 21.5 * 18.4 * 5.4cm/ 8.5 * 7.2 * 2.1in Package Weight: 587g/ 20.7oz Note: Please read the manual carefully before using. Do not use the machine when charging. While using, please adjust the speed gradually from low to fast, especially for beginners. Package List: 1 * Grinding Machine Host 1 * Nail Drill Pen 1 * Pen Holder 1 * Connecting Wire 1 * AC/DC Adapter 6 * Sanding Bands 6 * Drill Bits 1 * User Manual