Are Omega's Dive watches water resistant when the crown is opened?

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I’ve also read about people saying moisture or humidity got in their watches with the crown left open (not exposed to water) so I’m honestly not sure what to think.
There is a difference between people saying something on the internet and @Archer sharing his knowledge, I know whom I would listen to when it comes to watches.
 
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I’ve also read about people saying moisture or humidity got in their watches with the crown left open (not exposed to water) so I’m honestly not sure what to think.

If you are this concerned, take it to Omega.
 
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I’ve also read about people saying moisture or humidity got in their watches with the crown left open (not exposed to water) so I’m honestly not sure what to think.

It sounds to me like this is an issue of irrational fear on your part, so it is not helpful for people to present you with facts.
 
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It sounds to me like this is an issue of irrational fear on your part, so it is not helpful for people to present you with facts.

Irrational? Seriously? Omega and other manufacturers say it themselves that screwing down the crown ensures water resistance. Surely someone will chime in to say it’s probably for liability purposes but in that case why does Omega say the He Valve still provides some protection even if unscrewed? The info here directly goes against the above. So yea, it’s totally irrational to question whether humidity can enter the crown if it’s popped out all the way….

 
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Irrational? Seriously? Omega and other manufacturers say it themselves that screwing down the crown ensures water resistance. Surely someone will chime in to say it’s probably for liability purposes but in that case why does Omega say the He Valve still provides some protection even if unscrewed? The info here directly goes against the above. So yea, it’s totally irrational to question whether humidity can enter the crown if it’s popped out all the way….


You are making a mountain out of a molehill...I’ve demonstrated that Omega watches will pass pressure testing with the crown unscrewed, and pulled out as far as they will go (you can search for it here). Again, if you are not satisfied, take it to Omega. No one here is going to be able to satisfy you it seems...
 
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Irrational? Seriously? Omega and other manufacturers say it themselves that screwing down the crown ensures water resistance. Surely someone will chime in to say it’s probably for liability purposes but in that case why does Omega say the He Valve still provides some protection even if unscrewed? The info here directly goes against the above. So yea, it’s totally irrational to question whether humidity can enter the crown if it’s popped out all the way….


I take on board where you are coming from.
It's a prudent approach👍
If people want to get all cavalier about how they treat their own watch then so be it, but I honestly think that if one of us deliberately left the Winding crown unscrewed and water got into our watch, Omega would have no hesitation in denying any related warranty claim if it was openly disclosed up front to Omega👎
And I think Omega would be totally justified on the basis the owner was either reckless or negligent😉
I believe the same principal would apply to any respectable independent watchmaker, especially if they wished to remain profitable👍
The manufacturers have to cover their watches for events under reasonable circumstances.
Leaving a screw down crown or any crown in the open position is not reasonable.

The other major thing to consider is that an unscrewed crown, or any crown left in any of the open positions is extremely vulnerable to being damaged accidentally and it may well compromise water resistance as a result. Hense the owners manual recommendation to screw it down at all times😉
It's all well and good to deem the open crown as being good to keep the water out to the rated depth under ideal circumstances and under controlled test conditions.
But it's something else entirely out there in the real world😉
Screw that baby down just like it says in the manual👍
Edited:
 
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Several years ago my almost new PO leaked twice and I blame this gas valve. But of course, I don't believe to my lying eyes 👎.

On Rolex forums I read the story of a diver working on an oil platform in the North Sea. His Rolex DSSD which is a gold standard of unbreakable watch leaked after some time, too. So yes, "until it leaks".
 
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If you were outside for several minutes with the crown unscrewed I’d be more concerned about helium escaping from the watch than moisture getting in.

What Helium?
 
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What Helium?

From what I can understand, people, especially deep sea divers (a wimpy lot) were complaining about the weight of their watch.

It's said that a salesman heard of this issue, and remembering how the helium balloons of his childhood were much lighter than balloons filled with ordinary air, suggested to his manager that if watches were filled with helium they would be lighter.

Apparently, his manager was at the trough (sorry, at a dealer conference) and mentioned this idea to one of the leading dive watch manufacturer representatives (another sales person).

One thing led to another, and that's how we now have helium filled (and much lighter) dive watches.
 
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Funny as see a lot of oil rig divers on oil rigs. And fish with one of the best that runs a Australian company with 20-30 divers.

No Rolex or Omegas on any of the divers (and they could afford one with just one dive)……Seiko…Seiko…Seiko
 
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From what I can understand, people, especially deep sea divers (a wimpy lot) were complaining about the weight of their watch.

It's said that a salesman heard of this issue, and remembering how the helium balloons of his childhood were much lighter than balloons filled with ordinary air, suggested to his manager that if watches were filled with helium they would be lighter.

Apparently, his manager was at the trough (sorry, at a dealer conference) and mentioned this idea to one of the leading dive watch manufacturer representatives (another sales person).

One thing led to another, and that's how we now have helium filled (and much lighter) dive watches.

Thanks for clearing that up for me. 😀
 
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You are making a mountain out of a molehill...I’ve demonstrated that Omega watches will pass pressure testing with the crown unscrewed, and pulled out as far as they will go (you can search for it here). Again, if you are not satisfied, take it to Omega. No one here is going to be able to satisfy you it seems...

I imagined that there was an additional washer to provide a static seal, but it is just to stop people fiddling with it?
 
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No Rolex or Omegas on any of the divers (and they could afford one with just one dive)……Seiko…Seiko…Seiko
I wonder if it's because Rolex and Omega are now considered "luxury" watches whilst the Seiko is still regarded as a "tool watch". Given the much lower cost of a Seiko, I wouldn't be surprised. You'd be a lot less heartbroken if you accidentally dented a Seiko at work compared to a Sub.
 
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Here I've demonstrated that the crown will still seal even if it's unscrewed:

Seamaster exposed to water with unscrewed crown | Page 3 | Omega Forums

No one is recommending you leave it unscrewed of course, but going outside with it unscrewed for 2 minutes not in the rain or humidity, and being concerned that you have somehow let a damaging amount of humidity in the watch is a bit over the top...
 
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No one is recommending you leave it unscrewed of course, but going outside with it unscrewed for 2 minutes not in the rain or humidity, and being concerned that you have somehow let a damaging amount of humidity in the watch is a bit over the top...
"Over the top" behavior is what this forum does on a daily basis. That's why many people show up here. People are overly obsessed on water resistance and not overwinding their Speedmasters.
 
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"Over the top" behavior is what this forum does on a daily basis. That's why many people show up here. People are overly obsessed on water resistance and not overwinding their Speedmasters.

... and hand alignment ...
 
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"People are overly obsessed on water resistance and not overwinding their Speedmasters.
How about scratches and dings? How about how brown their tritium is? How about whether such and such bracelet, hand or what-have-you is correct? How about whether a 3861 can be called a "moonwatch"? These forums are mostly about one obsession or another... 😉
 
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From what I can understand, people, especially deep sea divers (a wimpy lot) were complaining about the weight of their watch.

It's said that a salesman heard of this issue, and remembering how the helium balloons of his childhood were much lighter than balloons filled with ordinary air, suggested to his manager that if watches were filled with helium they would be lighter.

Apparently, his manager was at the trough (sorry, at a dealer conference) and mentioned this idea to one of the leading dive watch manufacturer representatives (another sales person).

One thing led to another, and that's how we now have helium filled (and much lighter) dive watches.

You're a bad egg.
 
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From what I can understand, people, especially deep sea divers (a wimpy lot) were complaining about the weight of their watch.

It's said that a salesman heard of this issue, and remembering how the helium balloons of his childhood were much lighter than balloons filled with ordinary air, suggested to his manager that if watches were filled with helium they would be lighter.

Apparently, his manager was at the trough (sorry, at a dealer conference) and mentioned this idea to one of the leading dive watch manufacturer representatives (another sales person).

One thing led to another, and that's how we now have helium filled (and much lighter) dive watches.

Hydrogen proved to be a bad idea...