The package includes: a foot grinder, a coarse grinding head, and a fine grinding head (one is on the product and the other is in the package). You can replace the coarse and fine grinding heads as needed. DIGITAL DISPLAY: The electric foot grinder is equipped with an LCD display with a clear digital readout that allows you to easily select and adjust settings for a personalized and effective foot experience. Press the button to perform the grinding action and long press to turn off the electric foot grinder. Instructions for use: 1. Type-C charging port Long press the button to start. Short press to turn on. Long press to turn off. Replaceable grinding heads: The electric foot grinder is equipped with replaceable grinding heads in coarse and fine grades to flexibly adapt to different areas of your feet. Use these grinding heads to target calluses on the toes, heels, sides, and soles of your feet to ensure a comprehensive and holistic foot care program. Effective Callus Removal: The electric foot grinder can tackle all kinds of stubborn calluses and rough skin, using advanced foot grinding technology to effectively remove dead skin and leave your feet smooth. You can enjoy salon-level results at home, leaving your feet healthier and softer. Easy to Operate: Electric foot grinder with two speeds and a simple on/off switch is easy to operate and use. It conforms well to your feet for effective foot care without worrying about damaging your feet. Rechargeable and Portable: The electric foot grinder is powered by rechargeable batteries, no need to replace batteries frequently. Easy to use at home and compact enough to take with you when traveling, ensuring your feet always get the care they need.