This product is an electric nail , made of , sturdy and durable. You can safely and efficiently grind the fingernails. It is suitable for manicure or daily nail trimming use. Simple design, very convenient to use. High-speed grind head, which ensures the efficiency for you. Features - Color: Rose Gold. - Material: Aluminum alloy+PA6. - Size: About 12.00X1.80X1.80cm/ 4.72X0.71X0.71inch. - Made of , durable and practical for use. - The central touch is convenient for one-handed operation. - It is suitable for manicure or daily nail trimming use. - Suitable for all kinds of nail polish, nail removal, polishing, etc. - High grind head, which ensures the efficiency for you. Specification Working voltage: 3.6V Motor power: 8W Battery capacity: 300MAH Clamping diameter: 3MM (adapted to our standard 3 ceramic grinding heads) Charging specifications: USB-TYPE-C (suitable for all USB port power supplies) Charging time: 30 minutes 80% 60 minutes speed: 1 gear 5000, 2 gears 10000, 3 gears around 18000 Endurance time: high gear / more than 1 hour without load Package list: 1 x nail grinding machine 1 x USB cable 13 x grinding heads