Safe: With its auto turn-off feature, you never have to worry about damaging your skin - it will turn off automatically if the pressure is too high. Powerful & adjustable: With two rollers of varying roughness, and two different speeds. Rechargeable: Sports a 1200mAh large capacity lithium battery that can work for up to 120 minutes. Foot exfoliator: Get a rechargeable pedicure tool. Perfect for: Smoothing out cracked, rough or dead skin to get perfectly soft feet - just in time for summer! IPX7 waterproof rating: Suitable for being rinsed under running water when cleaning. Note: do not soak in water.