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 Does not hurt hands and nails. Product name: Nail polish machine Model Number:V2 Charging method: usb charging Item Type:Electric Manicure Drill & Accessory Product name: Nail polish machine Variable speed: 0 - 45000RPM (adjustable) Battery capacity: 1800mAh Charging time: 2 hours Working hours: 8 hours Input voltage: DC5V , 2A Suitable for: general population Colour:White Material:ABS+Aluminum Alloy Package Contents: 1 * Main Machine 1 * handle 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.