DIOZO is a beauty manufacturer who specializes in beauty products. Our products are certificated by customers who uses our products. We aims to provide the best products and products experience. We believe this electric foot file will solve the problem which troubles you and can bring you confidence and beautyFeatures Quickly remove hard skin and Callus: The foot file begins to help you to remove heel cracked, dry, and thick skin automatically in minutes, you don't have to move it manually. Three different replacement roller heads: Fine roller head for daily care; Regular roller head for newly formed callus; Coarse roller head for stubborn thick callus. Large battery capacity: 1200 MAH lithium battery, a fully charge could support 90 min usage. Comes with a USB cord, corded and cordless usage. Two speeds of operation: 1700x/min low speed and 2000x/min high speed, press one button choose the suitable one. Intelligent design: IPX7 Waterproof, 5-level battery LCD display, non-slip design. Warm Tips The use time of electric foot file is determined by healthy situation of each person's feet, which is affected by daily activities, shoes and so on. How to use it Step 1: Wash your feet with comfortable water. Step 2: Press the button, put it on the area which you plan to heal. Step 3: Remember to apply a foot cream after using the product to bring better effect. Packing List Electronic foot file*1 + Roller heads*3 + Clean brush*1 + USB cord*1