Features： 1、Foot Massage: Use electric callus remover to do massage to the feet to promote blood circulation, accelerate skin repair, relieve fatigue. 2、Make The Skin Soft: Electric foot callus remover can be used to grind calluses, dead skin, etc, so that your feet skin back to soft. 3、Removable: This electric foot grinder has a removable grind head that can be removed by pressing the button for easy cleaning after use. 4、Safe And Comfortable: USB foot grinder is a safe pedicure tool that removes calluses by grinding with a delicate touch and won't scratch your feet. 5、Compact And Portable: This foot trimmer is designed to be very compact and easy to hold in one hand, suitable for home and travel use. Specification： Item Type: Electric Callus Remover Material: ABS, Stainless Steel Product Size: Approx. 21 x 8 x 4cm / 8.3 x 3.1 x 1.6in General Use Method: 1. Please remove the rubber cover protecting the callus remover roller before use. 2. Make sure the callus remover roller has been firmly fastened to the unit. Do not start without the callus remover roller installed. 3. Twist the silver ring to the left to activate the device and gently slide the callus remover roller over the hard skin and the dead skin will be removed. Product should be used on dry skin only. Do not press hard or the product will stop working. 4. Turn off the main unit and check if the skin on your feet is as soft as you expect. If you have not achieved your goal, start the device and repeat the above steps until you achieve your desired result. Warning: Remember not to use the product on the same area for more than 3 to 4 seconds. If your skin becomes sore or inflamed, stop using it immediately. 5. Allow the feet to return to softness. 6. Twist the silver ring to the right to turn off the device. 7. Wipe or rinse the feet to clean the excess dead skin that has been removed. Package List： 1 x Electric Callus Remover 1 x Grinding Head 1 x Data Cable