[Maximum speed 45000RPM]: The rechargeable nail drill matched with a mobile power supply can work for up to 10 hours after being fully for 2 hours. [Low Heat/Noise]: The professional nail drill for acrylic nails is designed with a brushless motor, aluminum alloy body, high-quality bearings and internal cooling system. [LCD Smart Screen]: The LCD smart screen can clearly display the speed, rotation direction and remaining power so you can operate as needed. [Multifunctional]: The acrylic nail drill can be used for grinding, cutting, polishing, acrylic powder, carving and removing gel nails, cuticles and dead skin Does not hurt hands and nails. Name:Nail Drill machine Model Number:Nail Drill Machine Item Type:Electric Manicure Drill & Accessory Variable speed:0 - 45000RPM (adjustable) Battery capacity:2400mAh Charging time:2 hours Working hours:up to 10 hours Input voltage:DC5V, 2A Colour:Colorful Green Material:Plastic Package Contents: 1 * Main Machine 1 * Handpiece 1 * Pen Holder 1 * Connection Cable 1 * USB Charging Cable 1 * nail drill bit set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.