Feature:1. LARGE CAPACITY: Large capacity and long battery life, built in large capacity lithium batteries, full electricity can work for 8 to 10 hours.2. GOOD MATERIAL: Power interface, uses ABS plastic insulation material, delicate texture. Compact and lightweight body design makes it efficient heat dissipation.3. SIMPLE OPERATION: Replace the grinding head, the pen body has a switch lock, the operation is simple, the heat dissipation is better. You can do your nail artwork anywhere and anytime.4. STRONG COMPATIBILITY: Three valve spring lock head, do not pick the grinding head, strong compatibility, do not pick the grinding head. give you a comfortable experience when you use it.5. LARGE SCREEN: LED Large screen display, speed control electric, 0‑30000RPM, independent button for left and right rotation, strong compatibility.Specification:Item Type: Manicure nail drillMaterial: ABSPower Supply: Lithium ion battery (Built in)Battery Capacity: 2600mAhAdjust Speed: 0-30000 RPMSize: Approx. 13.5 x 7 x 2.5cm / 5.3 x 2.8 x 1inHow to Use:1. Speed display: 00 to 30RPM, representing 0 to 30000 rotation number, power display: boot display speed. It has a 2600mAh large capacity battery charging structure, full of 3.5 hours. 2. rotate the speed clockwise, adjust the speed; rotate the clockwise, slow down the speed. 3. Type C grinding machine charging port. 4. Positive and reverse: Press the default F and press the button to reverse R, and then click the button to return to the positive turn. 5. Turn on: long press for 1 second; Turn off: long press for 1 second. 6. Follow the pen loosening and turn the head, and clamp the bottom of the grinding head. 7. Follow the connection of the host.Package List:1 x Electric Nail Drill1 x Drill Pen6 x Drill Bit1 x Drill Bit Storage Box6 x Sand Circle1 x USB Charge1 x Connection Cable1 x Instructions