Powerful and Safe Use:Electric Foot Callus Remover Have 2 Speeds Adjustable:1700X/Min When at Low Speed and 2000X/Min When at High Speed.If The Pressure Is too Strong,It Will Automatically Stop Working and Avoid Damage to The Healthy Skin. .Led Power Display :Large Capacity Lithium Battery Has Overcharge Protection and 5 Levels Battery Display Function,You Can See How Much Battery Left and When to Charge.360 Degree Rotating to Automatically Remove Foot Heel Cracked, Dry, Hard Dead and Thick Skin, Calluses Easily In Minutes to Rejuvenate Your Foot, Making It Elegant, Healthy and Sexy, Enjoying A Fast, Painless Foot Spa. .3 Replace Grinding Head:Callous Removers for Feet Has 3 Different Quartz Sand Grinding Heads,1 Rough Grinding Head Can Remover Stubborn Horny Dead Skin , 1 Medium Grinding Head Can Remover Rough Dead Skin, 1 Fine Grinding Head Use for Daily Care. You Can Choose Suitable Grinding Head According to The Skin to Care,Make Your Feet Restore The Delicate and Smooth Skin. .Waterproof:The Electric Foot File Has Waterproof Design, Whole Body Can Be Rinsed Under Running Water. You Can Washing It and Keep Clean After Using. It Is Suitable for Wet and Dry Use, Electric Foot Scraper Would Effectively Solves The Problem of Bacteria Growing On The Gaps and Protects Your Feet Health. .Best Service:We Will Provide Best Service for This Electric Foot Callus Removers to You. Any More Question On The Products, Please Feel Free to Contact Us. .