Function: 1. The product is designed do safe and fast trimming and polishing of small toes and nails in infants and adults. 2. Equipped with 6 different contacts that can be used selectively depending on the age of the child. 3. Made of eco-friendly ABS material, safe and durable, can be used for a long time. 4. These do nail files can be charged and can be used do 75 minutes on a single charge. 5. Lightweight and portable, you can easily insert it do bag and use it at any time. Specification: Item Type: do nail file for kids Material: ABS Size: approx. 13 x 4 x 3 cm or 5,1 x 1,6 x 1,2 inches Battery model: 3,7V lithium battery Battery capacity: 300 MAH (battery included) Apply do: a child aged 0-3 years. How to use: Connect the USB do polisher do nails, fully charge it, put down the USB cable, mount the polishing head and turn on the switch, aby use. List of packages: 1 x Electric File do Baby Nails 9 x Polishing Heads 1 x USB Charging Cable 1 x Storage 1 x Manual