Nicely done
Has really helped save my husband some time.  Now I can smooth my own callousy feet.  Prefer the electric versus battery. It takes a little while but with regular use my feet are feeling better and better.  I use it once a week.  The only minor con is that you must keep alight touch or it will stop rotating.  Its just a matter of getting use to the amount of pressure.  I have had my Emjoi for about a month and would recommend it.
Rating: 4 stars