LOL, not the issue. I've turned 3 SE into 100% nonfunctional, black screen, won't turn on etc. watches by swimming. The first one worked for a year then it went black and absolutely would NOT start, the second one lasted ONE swim and then did the same thing, the third one went about 6 swims and then did the same thing. Black screen, will not work at all. And this is using the "swim tracking mode" that blocks the water. In reading the info, on the various watches, it says that the water resistance declines over time so I was curious as to what model people have had the best luck with not having them, I assume leak, and stop functioning. As in dead, don't charge, don't turn on, etc. I looked at the high end ULTRA one but it's way overkill and still has the same disclaimer about what resistance dimishing overtime.