The nail drill machine is LED large screen display, 0-30000RPM speed regulation, memory function and pause function, built-in high-capacity lithium battery, long battery life. Features: LED large screen display, 0-30000RPM speed regulation, independent buttons for left and right rotation. ABS plastic insulation material, delicate texture. The pen body has a switch lock for easy operation and better heat dissipation. Three-lobed spring lock head, not pick grinding head, strong compatibility, high concentricity, no fling, no numbness, no vibration. Memory function and pause function, intimately record historical operation data for you. Built-in high-capacity lithium battery, long battery life, can work for 8-10 hours when fully charged. Specifications: Material: ABS Color: White, Green, Purple (optional) Built-in Lithium Battery Capacity: 2600mAh (included) Speed: 30000r/min Power: 36W Package Weight: 470g / 16.58ounces Package Size: 210 * 170 * 40mm / 8.27 * 6.69 * 1.57in Packing List: 1 * Nail Drill Machine 1 * Grinding Pen 1 * Box of 6Pcs Grinding Heads 2 * Toe Separators 1 * Nail File 1 * Instruction Manual 1 * Color Box 1 * USB Charging Cable