Works great!
I use this Emjoi  for callouses and for a thick nail.  I was previously using this same brand in the cordless model which worked well but this one works much better.  The only problem I had is that it is difficult to turn off.  I solved this problem by leaving it on and unplugging it instead.  So basically I leave in the on mode all the time.  Otherwise I am very happy with this product.
Rating: 5 stars