As it's METAS. Yes, get it adjusted

 

I would wait until it needs a full service.

 

5-10 years? And you wouldn't get it fixed for free now - given it's not within manufacturing specs?

If out of warranty- maybe wait until it needs a service. But it's under warranty so I'd definitely get it fixed

 

I am not saying that your watch is performing like it should. Nor that you shouldn't inquire about it. But this is literally what regulation is for - end-use adjustment.

However :

That 0/+5 is an arithmetic mean of multiple (four if I recall), multiple-position (six positions-duration combinations) specific daily precision tests. It's an average of daily rates, which are averages over multiple positions. It does not mean your watch can't lose time in customer use. Though it would be statistically less likely and nearly implied by the way the spec is used in marketing.

So unless you are testing to METAS-n001, it's not apples-to-apples. Again, not saying your watch is (or isn't) performing. But it's not technically possible to determine if it's not up to the standard if you're not testing to it.

Now maybe wearing it for some months and tracking it informally is a reasonable (and compelling) approximation. I'm not the one to say.

I might personally take the isochronism you've been experiencing (multiple overnight positions to no effect) and call it a day. Or additionally, you might get it regulated for a bump in the rate, if the - 2 bothers you so much. But you'll pay for that service as that's got nothing to do with a warranty claim.

 

Use the Watch Accuracy Meter app to figure out positional variance. You may just need to leave the watch in a different position on the nightstand to make it +/-0.
I have a couple of watches that are -1/-2 spd that correct themselves overnight by leaving them dial down at night.

 

Yes, too picky. Figure out what position it needs to be at night to bring that -2 closer to 0 and be done. Aren't COSC and METAS averages over several days in many positions at different temperatures, all of which are not equivalent to your wrist so longtimelurker is correct - apples to oranges. But 2spd is really excellent. This is an "if you want better, get a quartz" case.

 

Timegraohers are right up there with loops in my opinion....

but that is just me

 

Ya in my opinion that's not bad at all. Keep wearing it and see what happens

 

An Omega Chronometer shouldn’t go minus.

 

I would leave it well alone. Experiment with overnight resting positions. If you send it in, it's highly likely it will come back after a 3 month turnaround with a report saying its within spec. You also run the risk of it being bashed around in the service centre. @Archer has a great explanation of accuracy and expectations. He may spot this thread

 

As noted above, look at the positional variances over a week or so and then decide what to do if anything.

 

As you've had it for a while, I'd get it regulated by Omega. If you can't trust them to regulate your watch, you shouldn't buy a watch from them that only they can service.

Typos courtesy of Samsung Auto-Incorrect[emoji769]

 

I’m picky about accuracy too. So I just adjust my own watches based on my wear habits. If your AD still has decent staff, she’s should be able to do this quickly and easily for you. But most AD will just send it out for service and you won’t have a watch for 2 months. So factor that into your calculus before you take it in.

Fwiw, adjusting a watch is pretty easy. And fun. Sealing them back up is not really a concern, it’s just gaskets and a threaded caseback. No magic.

 

I’m picky about accuracy too. So I just adjust my own watches based on my wear habits. If your AD still has decent staff, she’s should be able to do this quickly and easily for you. But most AD will just send it out for service and you won’t have a watch for 2 months. So factor that into your calculus before you take it in.

Fwiw, adjusting a watch is pretty easy. And fun. Sealing them back up is not really a concern, it’s just gaskets and a threaded caseback. No magic.

Any METAS Omega is going to have a free sprung silicon spring with weights on the balance wheel for regulating. I like to regulate my own cheaper watches, too, but I would never recommend an amateur take on something like that. Only a professional with the right tools should poke around these movements.

 

I agree, it would irritate me. Slow watches are vexing.

What did the Omega factory test indicate for your watch?

Customer Login | OMEGA US®

www.omegawatches.com

 

I agree, it would irritate me. Slow watches are vexing.

What did the Omega factory test indicate for your watch?

Customer Login | OMEGA US®

www.omegawatches.com

Yes, please download your results. Looks like this:

 

I suggest wearing for a while longer and if accuracy really goes out of spec, get it regulated...-2 spd wouldn't warranty a regulation for me , although I understand it is not what specs state .

 

Hey, it meets the -2 spd benchmark of Rolex. Your watch is actually a Rolex masquerading as an Omega!

 

Typical

 

My 8900 PO recently started running slow on the wrist and my Timegrapher confirmed minus 1-2 spd regardless of position. My service centre is only 1 h away so the turnaround time shouldn’t be too long. Also, it’s only got four months left on the warranty and I knew that it running slow would continue to bother me.

 

My '57 with 9300 movement has below 6 sec accumulated error after three months, but weekly error sometimes reaching +-6 sec. Whenever I try to meausre daily error it's subsecond, but it couldn't be subsecond every day, because sometimes error jump by 5 sec in three days. It looks kind of strange to me how weekly error reaching 6 sec but three month accumulated error still oscillate around zero. I bought from Japan grey dealer, I suspect they may have regulated watch before sale, Japanese dealers seems more conscious about accuracy then US/EU dealers.
I also neither wind wacth, nor put it in the winder for two months alreay, daily wear is enough.

 

I have exactly the same with my AT8900. Max deviation day over day is -1.5 or +1.5, super random. But 6 weeks after setting the time, it's dead on 0 seconds compared to atomic time. These little things have their own soul

 

Thanks to all for your comments and suggestions. The watch was bought new only 2 months ago from a boutique and is therefore still under warranty.

Yesterday it only lost 1 second, not 2. It varies, it would seem.

Here are the test results from Omega:

Meanwhile, I could have sworn that I read something from Omega, perhaps on their website, saying that they would rather you be “early to a meeting than late” and that’s why the new Master Chronometer doesn’t tolerate losing time, only gaining up to 5 seconds per day, etc. I can no longer find this sentence or else I’d post a screenshot of it.

If this sentence was indeed on their website (and I’m not misremembering) then it means that in the real world, and not just in their controlled testing, the watch is promised to not lose time, according to Omega.

I’m leaning toward re-trying the various positions at night method of regulating. Then, if it still bugs me in a month I may send it in for adjustment.

Thanks for reading!

 

Yesterday it only lost 1 second, not 2. It varies, it would seem. Here are the test results from Omega:..... I’m leaning toward re-trying the various positions at night method of regulating. Then, if it still bugs me in a month I may send it in for adjustment.

If this were my watch, I'd leave it alone. Granted your watch is deviating to the negative so you'll be 2 seconds late which is arguably outside spec (apparently should be only towards the +) but the specs on your watch show it to be able to deviate up to almost 6 seconds per day (to the positive) which is four times worse in absolute value (8 seconds from your average.)

So while you currently wear it to a -2spd, the watch is still able to deviate up to +6 and you could be anywhere between -2/+4 which, again, is very very good in my opinion.

I'd wear it and forget about it.

 

Same situation here while in winder. With crown down, spot on, now testing with other side down during the day. I’ll keep you posted if it helps.

 

my thoughts are you are being too picky but again, I would send it back and see what they say. My thoughts are that the will return to sender, after an extended period of no activity

 

I have noticed various peculiarities in the running of my JLC. First, it was running a bit fast and then it was running a bit slow. We are talking about less than two seconds a day either way. As an experiment, when watch was running about -1 to -1.5 spd, I gave the watch a good wind in the evening before leaving it face up. It then ran perfectly for several days. I concluded that I was probably not moving my wrist enough during the day to wind the watch as much as it needed to be wound. This also undoubtedly explained why the watch fell short of the expected power reserve.

Oddly, I let the watch run down and did not restart it for about a week. Since then the watch has run from +.5 to 0 spd. Although I did not allow the watch run down to test its accuracy, I subsequently read a post that said with newer watches (mine was 6 months old), letting them fully run down and then restarting them might affect their speed. I have no idea if this is correct.

All of this is to say that there are several factors that might cause small variations in the accuracy of the watch.

 

Should I send it in for warranty service? Give it more time? Stop being so picky?

When we pay thousands of dollars for a high performance watch, expecting it to keep time within its advertised spec is never "too picky". That said, if you want to go down the rabbit hole of "tracking the seconds" I would highly recommend getting an actual timegrapher. As others have mentioned, the timekeeping will vary between positions. It would take a week of "24 hours dial up", "24 hours crown down", "24 hours crown up" to get the data you can get in 5 minutes with a basic timegrapher and adjustable stand. This data can allow you to fine tune your daily aggregate timing by putting it in its fastest position overnight (or certainly avoiding its slowest) since losing time is your issue.

The timegrapher also gives a much better indication of true watch health. First, it shows how consistent the positions are. A watch that is -1s/d in half the positions and -3s/d in the other half will still be -2s/d overall, but is far superior to a watch which is -10s/d in one position, +6s/d in another position and still ends up with a -2s/d average. Further, a real timegrapher (i.e. not a phone app) will allow you to accurately measure the amplitude which is key to the watch's isochronism. I try not to obsess over these things, but I always take a full set of readings when I get a new watch and then I can go back once a year and see how things are looking. This is a much better way of producing a yes/no for sending in to service than simply looking at a single value of daily seconds.

 

If I were in the market for a co-ax Omega, this thread would NOT deter me.

 

My 2-month old Aqua Terra Worldtimer is currently running at -2 seconds per day.

View attachment 17269984

For the first month and a half, it lost about a half second per day. Now for the last 3 days, it’s -2 seconds per day. So, the watch is outside of Omega’s / Metas’ “Master Chronometer” specs of zero to +5 seconds per day.

View attachment 17270015

I wear the watch normally and I work from home; I don’t operate a jackhammer all day or anything. Also, I leave it on the dresser at night while sleeping. I’ve tried leaving it overnight in various positions, but it has no affect on the timekeeping.

Should I send it in for warranty service? Give it more time? Stop being so picky?

Thanks for reading!

Yes, it's out of spec and under warranty, get it adjusted. A meta certified watch should not be losing time, that's the whole point of meta, since lossing time is the worst senario for resyncing with the correct time.

 

How are you measuring your accuracy? I have an Omega with a METAS movement. I last set it a minute ahead on 11/29. That was exactly 90 days ago. I have been checking it against time.is each morning and writing down results almost every day since. On some days it has lost another second, others it remains unchanged, and it occasionally gains a second. Over the last 90 days it has lost 45 seconds, as of today. That averages out to -.5 per day, but I might have two or three days in a row where it loses a second each day. Even the best mechanical movements will have some variability. If you really want to know how it is performing I would recommend tracking it over a longer period of time. If it still averages out beyond the specs I would take it in.