Effectively removes hard skin, cracked heels, rough skin and dry dead skin. waterproof hardened mineral surface rollers, precision engineered for the most efficient pedicure in the comfort of your home. Specially designed roller head with long lasting micro abrasive particles ensures effortless results. Ergonomically shaped soft touch handle for an effortless, perfect pedicure Battery operated, which can be used cordless for 150 minutes on full charge. The product should not be used when it is getting charged