Our electric foot grinder is designed to remove dead skin and calluses, so that your foot skin can be revitalized and enjoy the silky touch. The grinding head made of natural quartz stone is gentle and non-irritating, durable and efficient, providing a gentle exfoliation experience for your feet. It provides three speed adjustment functions, the first gear is fine grinding, the second gear is acceleration, and the third gear is fast to remove dead skin. You can choose the appropriate gear according to your personal needs and enjoy a personalized foot care experience.Sentence 4. Built-in 1200mAh lithium battery, a single charge can be used continuously for about 180 minutes, so you don't have to worry about power problems and enjoy the fun of foot care at any time.Sentence 5. The USB charging design is convenient and fast, supporting multiple charging methods such as car chargers, PCs, power banks, etc., so you can easily charge your device no matter where you are.