1. SUCTION: Suction while grinding, suction foot grinder, gently remove dead skin to remove calluses, prevent dead skin accumulation into cuticle.     2. 2 SPEED: Double speed switch, there is always a gear for you, according to different frequency of speed, free to choose different grinding, strong power, to solve different skin types and dead skin problems     3. DIGITAL DISPLAY: Upgrade power digital display, running status at a glance, intelligent LCD digital display, high and low speed. You can adjust the speed to suit your needs.     4. QUARTZ SAND HEAD: Quartz sand grinding head, gentle clean without damaging the skin, select quartz sand material grinding head, hard and wear resistant, easy exfoliation and gentle skin.     5. LIGHTWEIGHT: It is small and lightweight, making it easy to carry with you wherever you go. Perfect for use at home, in the office, or while traveling. Its compact size also means it will not take up much space in your luggage or bag.         Specification: Item Type: Foot Grinder     Material: ABS, POM, quartz sand     Charging time: About 2 hours     Built in battery: Lithium ion battery, 1000mAh     Motor speed: Fast speed about 2200RPM, slow speed about 1700RPM     Usage mode: Rechargeable and plug in dual use              How to Use:          1. The product can be used for plugging and charging              2. Press the button to switch the machine on and off and adjust the gear position              3. Replace the grinding head can be removed according to the position of the slot of the machine with 2 fingers, the other grinding head can be pressed to the corresponding position, you can also rotate the machine head to remove the grinding head              Package List: 1 x Foot Grinder With Grinding Head    2 x Grinding Head     1 x Brush     1 x Instruction Book     1 x Charging Cable