As a major aside, I once did a similar test with a Casio G-Shock. I ran over it with the car (no problem), froze it in a block of ice (no problem), and boiled it.

The latter gave it a bit of pause and the LCD turned black. However, after a while the screen finally cleared and it continued to run. Pretty impressive.

On the other hand, while it was the first watch I avoided breaking to the point where it didn't operate, I did keep breaking the band where it met the watch -- the hole that received the pin got messed up and would no longer allow the band to be secured (which is what led it to being fodder for silliness like the above tests).

After that, I got a got a stainless Rolex GMT Master II, and I've worn it around the clock, everywhere, and it keeps time as well now as it did 20+ years ago. And hey, I haven't even managed to break the band. :-)

-john