1. Efficient and time-saving: Compared to the classic "rasp", the electric callus remover is very gentle, leaving your feet super soft and effortlessly removing calluses, cracked skin and rough spots. 2. Lighting design: The lighting design automatically turns on when the machine is turned on, even in the case of insufficient light, it can be seen at a glance, see more clearly, and the dead skin is not missed. 3. Power supply: Rechargeable design, no battery required, you can use a computer or a power bank to charge the tool without changing the battery. 4. 2 Roller heads: 2 Pcs roller heads are included: one for smoothing (coarse) and one for buffing (fine), so you can adjust to the individual needs of your foot. 5. Adjustable speed: With 2-speed settings, you can further adjust and experience true salon-quality results in the comfort of your home. The slightly curved shape is ergonomically designed for easy grip.The convex curve of the roller helps to remove thick dead skin effectively.Easily exfoliates rough, dry feet and blemishes for smoother skin.