Just in case you ever find yourself diving the Marianas Trench, you can take comfort in the knowledge that your Swiss Military "20,000 Feet" wristwatch won't be crushed into oblivion with you.
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Apparently, the wristwatch holds the Guinness record for durability at extreme depths. As you can see from this video, the watch can also handle some other everyday scenarios—like being shot, drenched with a fire hose and blown up with dynamite. Seriously, this titanium beast looks like its sealed up tighter than a submarine—and that kind of durability doesn't come cheap. Owning one will set you back over $4,400. [Swiss Military via Crunchgear]