The callous remover & massager is powered by two "AA" batteries.(not include). Exfoliating of dead skin cell to reveal a roseate, youthful skin. Convenient and easy to use, this is by far the most time-saving you've used for smoothing the dry, rough skin on you heels. It took about five minutes to sand your extremely rough heels ta a sa-ndal-ready state. - KIT INCLUDES 1. Crude Polish Accessories to rip the tough skin and cutting off. 2. Rolling massager to make better blood circumstances from skin again. 3. Crude polish accessory to rip the tough skin and cutting off on corner. 4. Make up sponge to massage and clean skin. 5. Soft latex brush for eyes and cheeks.