Efficient to Remove Rough Skin: Dual speeds of the gentle and forceful controls to remove callus and hard skin easily in minutes for good looking, elegant and sexy feetRechargeable and Convenient to Carry: This electric foot file has a built-in battery. Portable and cordless to use at home and outdoor after fully charging for men, high heels women, old people and manual workersSafe and Comfortable to Use: This cracked skin remover doesn't has harmful blade and roller surface to hurt your skin. Ergonomic handle design to hold comfortablyEasy to Clean: 2 rollers for soft and hard callus, also easy to replace and clean the roller of foot file. But please don't immense this foot care device into the water or shower it