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Discussion Starter · #1 ·
I have just spent a week in France swimming in, diving and jumping into, retrieving objects from the bottom of, and generally messing around in a 9ft deep swimming pool at all times wearing my VHP, nos issue whatsoever - just like Longines says

Funny how everyone believes Longines when they state an accuracy of 5 seconds per year but not when they say 50m WR is suitable for swimming in. Well it is!
 

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50m sounds better than 5 bar, which is what it really is. Glad to hear the seals held but you might be pushing your luck. Longines should really get these up to 10 bar, it wouldn't take much for them to do that. I really like the vhp otherwise and would have one if it had 10 bar wr.

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Isn’t 10bar an older thing?
The ISO (22810) seem to have checks for between 3 and 5 bar and then between 5 and 30 bar. But maybe what I read is only for mechanical watches?

Anyway, there is really no indication that Longines can’t be trusted when it comes to this. If they say suitable for swimming, why shouldn’t it be suitable for swimming?


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Last summer I bought a Conquest GMT. It is 5bar water resistant. That summer I used it to swim in the sea. and to snorkle, going down to 1 or two meters. and there was no problem. For an occasional use and recreation in the water I would use it without fear



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It will hold up for a few swims. I had a 5 bar original Omega X-33 titanium which did the same. But, one day, in Maui, the seals failed and the movement was ruined.
 

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Discussion Starter · #7 ·
I trust Longines and will swim, snorkel etc wearing it. People are obsessed with numbers, it's like the helium escape valve, 99% of people with one have no idea what it's actually for.
 

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Now if they will only start making them using a hard titanium alloy to get the weight down they would sell one to me. I hope MarkieB will keep us updated on how the WR holds up on his VHP.
 

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While I have no personal experience with this brand, in my experience, a screw down crown is critical. If this watch does not have one, then extra care must be taken to replace the waterproofing seals at least every 5 years.



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While I have no personal experience with this brand, in my experience, a screw down crown is critical. If this watch does not have one, then extra care must be taken to replace the waterproofing seals at least every 5 years.



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Actually a screw down Crown is not essential to water resistance. A Seiko certified technician told me years ago that modern day technology makes a screw down Crown unnecessary for water resistance.

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Actually a screw down Crown is not essential to water resistance. A Seiko certified technician told me years ago that modern day technology makes a screw down Crown unnecessary for water resistance.

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That is very interesting. What if the crown is inadvertently pulled out by minor impact or left out by user inattentiveness? I ask because I really like the Zenith Defy Classic (Titanium, weighs less than 100 grams, 41mm diameter, under 11mm thickness, 100m WR) but the lack of a screw down crown makes me very uneasy about wearing it while swimming and yes I would wear a $7000 Zenith while swimming just like I wore a Rolex during my four summers as a lifeguard and swimming instructor. Do you have more information you can share about the effectiveness of modern WR sealing of watches without screw down crowns?
 

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Actually a screw down Crown is not essential to water resistance. A Seiko certified technician told me years ago that modern day technology makes a screw down Crown unnecessary for water resistance.

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Exactly how modern? I had a 100m rated Victorinox purchased new in 2001 fail to keep water out in 2007.



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G Shocks get 20 bar (~"200M") WR without screw down crowns. You just need very good, redundant seals around the stem or pushers.
Are you aware of any G-Shocks that have a crown?

None of my G-Shocks has ever lacked water resistance, but multiple watches with push-pull crowns have allowed the ingress of water.



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Sorry referring to Seiko specifically.

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Still useful information for me. My wife currently wears a 100m Seiko with a push-pull crown, purchased new in 2010. I had the seals replaced by Seiko in 2016.


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