NON-BATTERY POWERED- This electronic foot file is not powered by batteries, no need to worry about low battery, if you want to use it, just connect it to USB and you can use it.?WITH SPEED ADJUSTABLE- The speed of electric foot callus remover is adjustable, you can adjust the right speed to remove callus on your feet. (When using the machine, please don't apply too much pressure, otherwise it will cause the machine not to rotate and the machine will be damaged).?WITH 60 REPLACEMENT SANDPAPERS- 60 replaceable self-adhesive sandpaper discs that stick to the electric callus remover very firmly and are also easy to remove, 1 sandpaper for 1 person, perfect for family use.?GENTLE- The speed range of electric callus remover is not very fast (0-500rpm), but it has a high torque (strong force), the right speed is more helpful for us to control the machine.?EASY TO USE- Durable aluminum alloy body, compact size, easy to hold and use, With a powerful motor, it can rotate 360 degrees to remove calluses.How to UseStart with Clean Feet: Wash and dry your feet thoroughly.Each Area: Use the device on each section for 3 minutes. Adjust the speed setting based on the severity of calluses.High Speed: For tough calluses.Low Speed: For gentle exfoliation.Moisturize: Finish with a hydrating foot cream to lock in moisture and maintain softness.Follow with your regular foot care routine for the best results.Package includes:1x Electric Foot Callus Remover30x Thick Sandpaper Disks30x Fine Sandpaper Disks1x Power CableNote1. Please allow slight measurement deviations due to manual measurement.2. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed in the pictures.3. Our store sells a variety of products, please take some time to browse our store, I am sure there will be something you will like. happy shopping!4.Please Contact us at any time if you have any questions, we will give you the most satisfactory solution within 48 hours.5.If there is any problem with the package, please don't worry, you can always contact us through buyer message.