The micro-pedi nano offers the same great results in a smaller, palm sized profile. This lighter weight cousin to the micro-pedi utilizes the same micro mineral rollers-one is included. It is powered by (2) aa batteries-not included. This is a travelers best friend-lightweight, so easy to use. Faster than metal scrapers and much safer as there are no sharp blades used. Spinning at 30 times per second the micro mineral rollers leave you with nothing but pampered feet! Accepted by the apma (american podiatric medical association).