Review (5/5): It has a nice seal in the battery compartment and I'm not worried ...
Disclaimer: I was given this product for free in return for an honest and fair review.
This callus remover works well, it's lightweight, and runs on two AA batteries. It has a nice seal in the battery compartment and I'm not worried about water finding it's way in. It comes with a replacement roller, and it's fine enough that it only gives a slight tickle while using it, it doesn't gouge the skin off of your feet, it slowly rubs it off. It's very easy to use, and hasn't presented any problems for me yet.