Thick Leather Polishing :Designed for thick leather polishing, this grinder provides superior results, making your footwear look as good as new. Two Different Thickness Grinding Heads :Equipped with two different thickness grinding heads, this product offers versatility and flexibility, catering to various polishing needs. Easy to Use :The grinder is user-friendly, making it easy to use and operate, even for those not familiar with electronic foot files. Compact and Portable :Its compact design and lightweight make it highly portable, perfect for on-the-go touch-ups. Charging instructionsCharging instructions 1.Ensure that the switch is turned off. 2.insert the power cord into the charging socket on the foot. 3.Insert the USB port into the power bank, computerinterface, or power interface. 4.When charging, a red light is displayed, and whenfully charged, a green light is displayed.The charging time of this product is approximately 1.5hours. This product is designed specifically for smooth skinon the feet and heels, Do not use this deviceanywhere else on your body. 1. Wash and clean the skin, thoroughly dry. Be carefulnot to use on damaged skin. 2. Ensure that the drum grinding head is placed on the device. 3. Remove the protective cover of the device and it can be used. 4. Press the start button to turn on the machine.The machine has two speeds, Press once at low speed, press again to change to high speed,or turn on the machine twice to fall behind high speed. 5. Gently rotate (front, back, or left and right) for 2-3 seconds in the calluses/corn/hard skinarea, Do not use force and gently slide the unit overthe desired area. If the skin is pressed hard, the device will stop. Stop and check if you have achieved the softness youwant.If not, pass through the area for 2-3 seconds and then check again, Continue using this methoduntil the smoothness is achieved. 6.To clean this product. 7.When not in use, please place the protective coveron your device. Color: White Material: Plastic + metal + frosted Package Contents: 1 * Electric Foot Grinder 1 * usb charing cable 2 * Different Thickness Grinding Heads Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.