El forero de WUS Lysanderxiii puso ésta magnífica tabla:

Seppia, un florero de Güs, convencido de que eso de que hace falta un 1000M con una corona triplemente roscada para meterse a la ducha es una soberana estupidez, mete un Casio digital de perra gorda y el popular Military de 50 eurillos bajo el mar. Vemos qué pasa…
http://forums.watchuseek.com/f74/can-i-dive-30m-wr-watch-empirical-experience-1847322-post20316506.html#post20316506
En ese foro postean en la lengua de la Pérfida Albión, así que tirad de Guguel Transleit si no lo llevais bien.
Reminder: my purpose here is simply to light heartedly ridicule and belittle as much as possible all of those brands (and people) who try to convince you that 100m WR is not enough for showering, or that the absence of a screw down crown basically prevents you from wearing your watch on a rainy day.
I try to do this by scuba diving with the cheapest possible 30m WR watches, and and trying to see when they will eventually fail.
Unfortunately this time my dive trip was pretty disastrous.
We had planned a pretty intense 4 dive day, including a deep dive in the morning (Spiegel Grove) outside of key largo, but first the other divers that were supposed to dive deep cancelled, forcing us to join the shallow dive boat, then my buddy suffered some nausea in the second morning dive, leading to aborted afternoon dives.
So this time the test could not be as extensive as the first time.
So we have our old contender, nicknamed Poseidon Lord Of The Depths, protagonist of the first dive test.
This is the possessed Casio A158W-1
Here seen in action while spanking most 40000m WR divers around the Spiegel grove in April:
The second is a recently purchased, $59 snk805 automatic from seiko, also a 30m WR watch, featuring an absolutely non screw down, minuscule wobbly crown, a plasticky feeling display case back and the overall feeling of a watch that could not survive an accidental beer splash at your typical barbecue party with multiple drunk friends (I happen to do this a lot, if you don’t please don’t judge. Also, I have an awesome life so you should probably consider inserting some more beer induced drunkness among your circle of friends).
So how did they perform?
We weren’t able to dive below 9 meters unfortunately (still approx 20 times deeper than a hot tub though), but…
Beginning of the dive:
Later
My dive buddy (he has a DSSD but he obviously thought 9m was too much so he went watchless)
After an hour:
So again, to the surprise of nobody who ever actually dove, a relatively new, cheap 30m WR watch from a respectable brand survived a dive.
The Casio on the other hand survived after having already endured multiple dives a few months ago.
I expect them to fail sometime obviously (all watches will fail eventually), but will continue to test them till they do.
On my next dives, probably happening this coming winter, I will bring both the Casio and the seiko, plus a new test specimen.
Do you have any 30m WR, cheap watch from a respectable brand to recommend? I was thinking a swatch.
Here’s the two test survivors after a thorough rinsing