Function: 1. The product is designed do safe and fast trimming and polishing of small toes and nails for 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 whenever you want. Specification: Item Type: do nail file for kids Material: ABS Size: approximately 13 x 4 x 3 cm / 5,1 x 1,6 x 1,2 inches Battery model: 3,7 V lithium battery Battery capacity: 300 MAH (battery included) Apply do: A child aged 0-3 years. List of packages: 1 x do electric nail file 9 x polishing heads 1 x USB Charging Cable 1 x Storage 1 x Manual Note: Connect the USB do polisher do nails, fully charge it, put down the USB cable, install the polishing head and turn on the switch, aby use.