This battery-operated foot buffer is ideal for fast, painless and effective at-home pedicures , Unique roller spins 360o to smooth away rough, calloused, hard and dry skin on the feet in seconds, Battery operated, 2 x AA batteries not included, Safer and more effective than metal scrapers, which use blades to cut skin, Easy and fun to use unlike pumice stones that require constant rubbing, 2 different rollers-coarse magenta and extra coarse blue to customize your results. Painlessly remove calloused skin. Accepted by the American podiatric medical association, Warning: Do NOT use if you have diabetes or poor blood circulation.