Feature: 1. Electric nail File can automatically finish trimming, cutting and grinding, simple operation. 2. CNC machining tool, golden 45 degree angle, 0.01mm accuracy, fast trimming speed. 3. With a nail chip storage box, you can pour out the chips with a light touch, which is easy to use. 4. Full fitting arc‑shaped protective support, comfortable to hold, suitable for people of all ages. 5. USB charging, 10 hours of strong cutting power, it only takes 30 minutes to full charge, and can stand by for 80 days when full charged. 6. The noise is lower than 50db when operate, it can help to trim nails and suitable for home or nail salon. Specification: Item Type: Electric Nail FileMaterial: ABS+Metal Color: Black Voltage: 5V Current: 1A Power: 2.5W Battery: 500mAh Polymer Lithium Battery Charging Time: 30 Minutes Use Time: 80 days standby when full charged Noise: <50db Weight: Approx. 253g / 8.9oz Size: Approx. 7.9x7.9x2.8cm / 3.1x3.1x1.1in Operation: STEP1: open the front cover STEP2: Gently press the power button, keep the nail close to the trim blade, and gently rotate the part to be trimmed Hold each finger for about 10 seconds and trim one hand in one minute.. Package List: 1 x Electric Nail File1 x Manual1 x Data Cable Note: 1.Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.