Amazing and effective
With some patience to avoid overdoing it at one time, this callous remover works great.  My initial charge lasted for weeks of twice-a-week use, and though I purchased replacement heads, I haven't worn out the original yet.  Snapping off the head to clean is a breeze, and appreciate the little brush you get to clean out the dead skin.  So far, the quality is outstanding.  Highly recommended.
Rating: 5 stars