Portable: The rechargeable nail grinder is cordless and lightweight, weighs only 0.13lb, very easy to carry and operate. You can use it about 3 hours after fully charged. You can do your nail art work anywhere. Starter kit for polygel nails, suitable for beginners. Dual Charging Port: The wireless charging base of the acrylic nail kit is more convenient for recharging and storage. There are 8 connectors on the charging base that can be inserted into the drill bit. You can use it while charging. The USB charging port also supports direct charging. Multifunctional Efile Drill Kit: This portable electric nail drill file is widely used for various purposes, such as grinding, carving, cutting, shaping, filling, smoothing, buffing, removing gel polish and cuticles for both acrylic nails and natural nails. Upgrade dedicated motor chip to operate efficiently, our cordless nail drill is low heat, low noise, low vibration, compact and portable. Advanced Technology & 3 Adjustable Speeds: Our manicure pedicure set adopts dedicated motor chip and microcontroller solution to control temperature. It will automatically shut off when continuously using 10 minutes to extend the lifespan of the electric nail drill machine. This nail grinder has 3 adjustable speeds for your choice, the maximum is 18,000RMP. Package Includes: This professional electric manicure set for women includes a rechargeable nail file, 11 nail drill bits, 1 ceramic drill bit, 36 sanding bands, 1 charging base, 1 USB cable. Please feel free to contact us if you have any questions. We offer 1 month return service and 1 year warranty after the date of purchase.