In my experience with other sport watches, damage is more likely to occur from un-rinsed perspiration left on the watch than by regular rinsing. Pick your poison-- I choose fresh water over nasty sweat crud any day.Here we go, another "I told you so". It's only a matter of time that the deposits from water will muffle speaker and mic. I predict a massive outcry of iWatch washers/showerers/swimmers in a year or so.