Review (5/5): I highly recommend....
I highly recommend the rechargeable Micro-Pedi. I bought my first one about 4 years ago and love it. I use it about every other day and it has dramatically improved my dry heels and calluses. Recently I noticed it wasn't working as well as it used to and the battery wasn't holding a charge as long as it used to. Then it occurred to me that I had been using it so long, the rechargeable battery was just wearing out. But I think for the price, 4 years is a pretty long time for something I use consistently, and the motor is still working just fine. Perhaps a replaceable battery will be in future versions, but I was happy to purchase my second Micro-Pedi.
I use genuine Emjoi refills and they last me at least a couple of months. I also discovered Gold Bond Rough and Bumpy cream which I use after the Micro-Pedi every other day. The combination has made my feet look much better. Helpful hint: always use the Micro-Pedi on dry skin that is free of lotion for the best results.