1、Controllable Speed: The electric nail file is easy to use, with only 1 button to control the speed, rotation (clockwise/reverse) and turn off the power. Allows you to choose the direction and speed of rotation when trimming different nails. Exquisite 360° polishing makes fingernails and toenails softer and smoother. 2、Anti Flying Design: nail clippers adopt anti flying design, which is easy to clean, and the nail pieces will not fly everywhere. The built in soft LED light can trim and polish toes and nails ly and efficiently. 3、USB Rechargeable: The electric nail file is equipped with a powerful and silent motor. USB rechargeable, no need to replace the battery, 1.5 hours full charge, lasting 2.5 hours, long battery life, just use the included charging cable to plug into the USB port. 4、2 in 1 Function: Each electric nail file set is equipped with 6 file heads. 3 types of colored sandpaper pads for babies and toddlers with different textures, designed for different stages of growth and various needs. Combine the functions of nail files and nail scissors to trim nails. 5、Applicable People: Each electric nail file set has one cylindrical file disk for adults, one metal grinding head, and one file head for polishing. Therefore, this nail set can be used for newborns, babies, aged 0‑12 months or older, and adults.