Feature:1. Adopts LCD screen, clear display of rotation direction, speed, battery remaining capacity, convenient for use.2. Pen holder design, can be placed on both sides, bilateral pen holder buckle, considerate design.3. Power bank function, not only the polishing pen power supply, but also can be used to charge mobile phones.4. Rechargeable design, builtin 3000mAh largecapacity integrated battery, which can last up to 12 hours on a single charge.5. Adjustable rotating speed 035000rpm, rotate the knob to adjust the speed, meet your different needs.6. Forward and reverse rotation directions make you feel easy to use left and right hands for nail polishing.Specification:Condition: Brand NewItem Type: Nail DrillMaterial: ABSPower: 40WPower Supply Mode: USBProduct Speed: 35000rpmBattery Type: Built-In BatteryBattery Capacity: 3000mAhCharging Time: 4 HoursEndurance Time: 12 HoursProduct Function: Functions such as nail grinding, polishing, nail polish removal, dead skin removal, carving radian, etc. It is used for various manicures, accessories and beauty.Product Features: LCD high-definition display / can be used as a power bank / bilateral buckleHost Size: Approx. 69 x 23 x 138mm / 2.7 x 0.9 x 5.4inSteps for Usage:1. Power on: long press for 1 second; power off: long press for 1 second2. The USB charging port can provide mobile phone charging function.3. Forward and reverse display: the default forward rotation "F" when power on, press the power button to reverse "R", and press the power button to return to forward rotation.4. Rotate clockwise to increase the speed; rotate counterclockwise to decrease the speed..Package List:1 x Host1 x Polishing Pen6 x Polishing Head1 x Pen Holder6 x Sanding Band1 x Type-C Cable1 x Polishing Head Connection Line1 x ManualNote:1. Please allow slight 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.