Review (4/5): Easy to use, does a very decent job.
These electronic foot files seem to be all the rage these days. I have tried doing a foot peel before, which did a really good job, but still didn't get rid of some of the tougher calluses. It's also tough to do a foot peel in the middle of summer when you're wearing sandals. I got this so that I could have something to work on those calluses at any time. This does a pretty decent job - it is easy to use, small (think about the size of an electric shaver), and painless. You don't really need to apply any pressure at all, just move it gently over the area, and it shaves off the callus in a very fine dust. If you apply too much pressure, it actually doesn't work as the file stops rotating at regular speed. The biggest issue is that the dust can be pretty messy, so I recommend doing it in the bathtub or somewhere that you can just wash everything down when you're finished. It uses a USB charger, so I'm able to leave it to charge using my phone charger on my night stand. It's not perfect and you can't expect that the calluses will come off straight away, but I found that filing then washing my feet off, and adding moisturizer, left my feet feeling soft, smooth, and vastly improved.
Note: I paid full price for this product and did not receive any discount.