Feature:1. EFFICACY: Real and effective, can effectively remove dead skin, thick calluses, do not leave marks, easily remove dead skin on the bottom of the foot, foot flakes, to prevent the accumulation of dead skin on the foot into the stratum corneum.2. MATERIAL: Selected silica to create, no pulling sensation, do the skin, just a light grinding, you can remove the aging keratin, coarse and fine grinding head, while massaging acupuncture points.3. GENTLE: Rounded and gentle particles, grinding does the feet, arc design more closely to the foot skin, flat grinding head can contact 86% of the foot area, the arc grinding head can contact 98% of the foot area.4. POWERFUL AND FLUSHABLE: Removable flushable abrasive head to avoid harmful substances breeding, lasting power, built in powerful motor to effectively remove calluses.5. GIFT: You can give this electric foot grinder to your friends, wife, parents, so that they will no longer be bothered by the aged calluses on their feet.How to Use:Installed into 4 AAA batteries or plug the USB cable can work (plug the USB cable must ensure that there is no battery installed inside, or it will short circuit).Specification:Item Type: Foot grinderMaterial: ABSBattery Specifications: 4 x AAA batteries (not shipped with batteries)Uses: Foot scrubbers to remove dead skin calluses Package List:1 x Foot Grinder1 x Replacement Head1 x USB Cable1 x Instruction Manual1 x Brush