The Breitling Watch Source Forums

I was wondering what type of engineering goes in to increasing a watches water resistant.

For example....a 300 meter depth rating is more than capable for even a hard core diver. Then you have the super deep watches like the Aquatimer and DeepSea.

What design elements make up this seemingly huge WR difference?

This is a good starting point - http://www.worldtempus.com/en/encyclope ... der-water/

I'm starting researching a few articles, though haven't got anything going on this yet, and trying to find Breitling specific stuff is proving rather tricky!

More robust gaskets, seals, and O rings for starters. Overall thickness of the caseback (old Rolex ads talk about the first point of case failure being the caseback deforming) and crystal(DSSD has a 5mm crystal, I believe). Screw down caseback rather than pressure fit. Screw down crown. Special gaskets and/or screw downs for chrono pushers.

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SHARKMAN

It seems like a bunch of little adjustments that make a lot of difference in the depth performance.

Thanks for the link Roff, interesting read.

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- This is Ghost Rider requesting a fly-by. - Negative Ghost Rider. The pattern is full.

Agreed. Just the sort of information I like to read.Thanks Roff.

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Happines is Good Health and a Bad Memory.
"Ingrid Bergman"

I hear the sea dweller now has a flexible back case designed to give a bit as pressure increases..

Thread is a little old... With that said, I don't know anyone who dives that uses (or would use) a DSSD (and some are Rolex SD owners). It's too nice of a watch, it's 12,000 feet rating has little practical value to even technical divers, and a $150 Seiko does the same thing for all but deep mixed gas diving. Further, you'd be crazy to take an analog watch over a dive computer these days.

That's correct. The caseback is titanium, secured in place with a steel screwdown ring.

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Driver8

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