Features Replaceable Roller Heads. Gentle & Safe on the Skin. Efficient Dead Skin Removal. Rechargeable & Portable. Professional At-Home Treatment. Electric foot grinder. Intelligent power digital display, three-speed adjustment. Headlight design, power-on lighting. Key start. Equipped with three different grinding heads, respectively (fine, medium, coarse) USB Fast charging. More convenient. How to Take Better Care of Feet? 1. Clean your feet, and soak them in warm water for about 10 minutes and dry your feet with a cloth. 2. Choose a roller according to your foot skin condition and remove the dead skin and calluses. 3. Wash your feet again and apply foot cream for better results. Confident in having clean, healthy, smooth, and attractive feet. Easy to Clean the Roller Head: Step 1: Use the brush included in the package to remove skin flakes from the surface of the roller head. Step 2: Press the side button to remove the roller head. Step 3: Rinse the roller head with clean water, then dry it with a cloth. Step 4: Install a clean roll head. Package Include: 1 Set Callus Remover.