For Removong Calluses On Feet Has 2 Pumice Heads REQUIRES 4 X AA Included(IE: MANUAL, 16 OZ BLENDER CUP): 2 PUMICE HEADS Wattage: 3 Voltage: 6 Product dimension: 2.953 x 1.575 x 6.772 Product weight (Pounds): 0.27 Features: Battery Operated Base Material: 80% Plastic, 20% Stone Powder Care: Wipe Clean Country of Origin: Imported