Question about Omega Seamaster 2541.80 Wrist Watch

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Why do the Omega Seamaster watches have a second crown close to the top of the watch? What is its function?

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This is a helium release valve.
The purpose and function of the helium relief valve is a common point of confusion. It has nothing to do with normal underwater diving. Neither does it have anything to do with the depth rating for a diving watch. Helium does NOT seep into the watch while the watch is in water at any depth!

To put it simply, you can completely ignore a helium relief valve. This feature is not used in any way with any form of normal SCUBA diving or anything else that involves less than a multi-million dollar deep sea exploration project.

SCUBA diving activities normally occur at depths of no more than 120 feet. At 250 feet, air becomes toxic due to changes caused by the high pressures at such depths. For those who do very deep sea research, they often use diving bells, dry dive suits, and other types of very deep ocean exploration vessels. In some of these, a highly helium-saturated atmosphere is used to avoid the air toxicity effect.

The purpose of a helium release valve is for people who wear their watch inside the helium-saturated environment for an extended period. Because helium is the smallest atom, it will seep through the watch's seals under the high air (not water) pressures in this environment. If the watch stays in this environment for an extended time, helium will continue to seep in to the watch until the air pressure inside the watch (initially surface air pressure) equalizes to the air pressure in the environment.

This becomes a problem when the vessel is brought back up and depressurized. The helium which seeped into the watch over a couple of days, cannot seep out any faster. The excess pressure inside the watch needs a way to release faster than it seeped in. It is only in this situation that a watch needs a helium relief valve at all. If a relief valve was not on the watch, the excess pressure would likely escape by pushing the crystal out.

But, unless you are in this exact situation, you should never keep this valve open. While the watch is designed to maintain most of its waterproof abilities even when the valve open, it still serves no purpose and increases risk of damage to the watch to do so.

Posted on Sep 23, 2009

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May i have information about omega watches?


Top omega watches internet wide free delivery. For Omega watches, quality, creativity and innovation work together. It can make use of the better of materials to style its watches. visit it http://sbwatches.com/

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Look can someone help me set the digital time on my watch please its omega seamaster polaris cheers....


Your watch uses a calibre 1665 movement. You might contact After Sales Service and ask them if they would send you an owners manual. Setting the time and date is fairly straight forward but you also need to sync the analog and digital displays so it is a bit difficult to describe in just a few words.

The basic guideline is
To select function - turn the crown
To change function - pull out the crown and then turn it
To start and stop functions - press the crown

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Set date on omega seamaster quartz 1425


When you pull the crown (winder) , you will notice it has two positions (two clicks). The first click is for quick date setting, the second click is for time setting (moving hands). Second click can be use for date setting as well, but for this you need to move watch hands forward for 24 hours to pass 12 o'clock.

Feb 25, 2011 | Omega Seamaster 300M wristwatch

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I have purchased a seamaster model 2561.80 and I cannot pull out the crown to position 2 or 3 in order to set the time or change the date.


Try turning the crown to unlock it before you pull it. Some higher end watches have screwed down crowns for keeping out water and dust.DB
Hope this helps. If not I'll but it for a buck ... Really it should solve your problem

Jan 30, 2011 | Omega Seamaster 2561.80 Wrist Watch

1 Answer

The 24 hour hand sticks at the 12 oclock posiion on my omega seamaster gmt every 24 hours the hour hand will not pass this position.


It sounds as though the 24hr hand is being obstructed, and that is also stopping the 12hr hand. Try to examine the face carefully for foreign objects (or bent hands). Unless you're very skilled with watches, I would suggest that you take it for repair. If the hands are sticking, gently pull out the crown ("winder") to stop the watch and prevent further damage.

Jul 19, 2010 | Omega Seamaster 2561.80 Wrist Watch

1 Answer

Find watch numbers, seamaster automatic


I hope you have Omega Dynamic?!

If yes, then the crown can be removed by appling slight pressure against the watch. The stem inside the watch is made of 2 pieces and the crown can be pulled out. But be careful, there are chances that the stem may break :-)

Sep 07, 2009 | Omega Constallation 1272.70 Wrist Watch

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Left hand side winder


The crown on the left side is HELIUM VALVE and is designed for compensating and keeping the right air pressure inside watch case if it is used for diving purposes.
If you will try to set something using this crown, nothing will happen, as it has special springs, gaskets and bars built into it, but has no any connection with watch movement.

Do not forget to rate, please.

Jan 29, 2009 | Omega Seamaster James Bond 007 2220.80...

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Omega seamaster gmt


what you have to do is that pull the crown to halfway do not pull completely out, if you pull halfway out and then move the crown to clockwise or anti clockwise it will change the date. if you pull completely out then it will change the time.

Nov 07, 2007 | Omega Seamaster 2561.80 Wrist Watch

2 Answers

Omega seamaster


sounds like an auto wind watch,you must wear this watch most of the day to keep it wound up.to wind the crown must be pushed all the way in.

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