specification: Item Type: Nail Grinding Machine_x000D__x000D_Material: ABS _x000D_Power Supply: USB_x000D_Power: 36W_x000D__x000D_Speed: 35000RPM_x000D__x000D_Battery Type: Lithium battery (included)_x000D_Battery Capacity: 4000mAh_x000D_Charging Time: 3 hours_x000D_Service Time: 16 hours_x000D_Efficacy: It has the functions of sharpening, polishing, removing gel polish, exfoliating, engraving arc and so on. It is used for various manicures, accessories and beauty operations. Features: 1Rotate the annular central shaft for speed regulation, one?button switch, click forward and reverse rotation 0?35000pm, and the rotation speed can be adjusted according to the needs. The LCD display screen can see the steering, the speed and the power. 2The handle shape is all metal, suitable for mold cutting, engraving, denture grinding, nail polish, gel polish removal, dead skin removal, drill removal, etc. Ergonomics design, pen?type body, compact and convenient, not easy to leave fingerprints, not easy to fatigue after long?term use. 3The vertical charger is either to charge the machine, or as a stand for the machine. It does not take up space and has a built?in 4000mAh large capacity battery. 4High accuracy and high torsion, low noise, low vibration and low heat. The ventilation design reduces the temperature of the polishing pen. 5The brushless machine has a built?in permanent strong magnet, will generate more power during the high?speed operation of the resistor, and it will also reduce the noise and efficient operation, the brushless phase is more energy?saving. PackageList: 1 x Nail Grinding Machine 1 xCharging Dock 2 x Nail Grinding Bits 1 x Nail Grinding Pen 1 x USB Cable 1 xNail Grinding BitCable 1 xManual