Battery-powered buffer restores feet easily buffaway rough, callused skin in no time! The battery-powered Emjoi micro-pedi callus remover has 360deg rollers that spin at 30 times per second to painlessly smooth feet without the effort of scraping or using a pumice stone. Perfect for those with arthritis or limited range of motion. The ergonomic, palm-sized buffer gives you total control. Requires 2 AA batteries, not included.