Works really well
I love this thing.  Use on DRY feet only.  I like the plugged in electric one as opposed to the battery ones.  They run better and are more resilient to harder areas to sand down.  I gave these away for Christmas and everyone was very happy to have them.  Tip:  Do not press too hard.  You will see results right away...but it will take a few weeks, sanding maybe 3 times a week...to see permanent results.  You need to take off thin layers one at a time.  You will have smooth feet.
Rating: 5 stars