Description: There are equipped with two rollers,a thin roller is used for polishing and daily maintenance, and a thick roller is used to smooth out stubborn calluses and dead skin Two-speed speed regulation,different speed, different strength,low speed suitable for delicate foot skin, high speed suitable for middle-aged and elderly rough skin It is fast and easy to wash and keep clean after use, it can be rinsed under running water Built-in high quality rechargeable 600mAh battery with USB rechargeable,charge once, use multiple times It is lightweight and portable,easy to carry for outdoors Specification: Material: Plastic Battery capacity: 600mAh Adjust:2 levels adjustable Cleaning method: grinding head washing Charging method: USB charging Power: 3W Input voltage: 5V1A Function: exfoliating dead skin and calluses Size: handle size:9x3.5cm/3.54x1.38inch,roller size:5.5cm/2.17inch Package Includes: 1 Set Foot Grinder 3 Pieces Grinding Head optional Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!