Description Product Name: Nail Polishing Machine Power supply: two AA batteries(not included with the product) Material: ABS Function: Remove armor and dead skin Target audience: General Set includes: Host body*1, grinding heads*5 1. Multi-functional Design: Not only can it polish nails, but it can also trim nails and remove dead skin, versatile and meets your different needs. 2. Convenient to Carry: Compact and lightweight design, easy to carry for travel, and convenient for nail care anytime, anywhere. 3. Exquisite Appearance: Fashionable and minimalist appearance design, adding color to your nails and showcasing personal charm. 1. Unscrew and rotate. 2. Insert two AA batteries and then unscrew and rotate back. 3. Insert the nail file firmly. 4. Begin filing your nails. Comments: 1. The manual measurement tolerance is 2-5g. Please don't mind your replacement. 2. Due to the differences between different monitors, the image may not reflect the actual color of the item. Thank you very much! 3. SKU color is the color of the product packaging Package includes: 1*Nail polishing machine