Review (4/5): Almost five stars
I have been using this toothbrush daily for almost three months. I have not had any of the problems (e.g. leaking battery compartment) noted by some other reviews. It is important to smear a little petroleum jelly (Vaseline) or similar substance on the o-ring that seals the battery compartment. This should be done each time the battery compartment is opened. It helps the o-ring seal and keeps it flexible. Otherwise, it's pretty simple to avoid getting that area wet to start with. The only reason I did not rate this a 5-star is that it does not have the tone that goes off every thirty seconds during the two-minute brush cycle. I miss that feature from my dead re-chargeable model.