Accuracy of Omega Moon watch professional

Archer · Jan 2, 2018

Bulldozer
Fair enough... it was just I took it as obvious that if the buyer thought that his watch was not performing to Omegas High standards that he would take it back to Omega as he only had it for 15 days.

I know that you know your stuff and I believe you but I must say that 16 seconds fast per day seems a bit much for a watch that costs so much.
They are certainly seeming to be covering all their bases on calibrating these new watches before they go out.

Trust me I've had people bring me watches that were still under warranty because they didn't trust the brand service center. If you are offering help that's fine, just be specific.

And please note that the watch that can be 16 seconds fast and still be in spec would be about 50 years old since that applies to the Cal. 321, not the 1861 - again details are important. Having said that the 1861 is not a certified chronometer, so the accuracy expectations are quite a bit lower than for a watch that is certified. Also please keep in mind these are max. specs by the manufacturer, so naturally represent the outside tolerance - again Omega's target rate for the 1861 is +6 per day.

Cheers, Al

Mongooseman · Jun 24, 2018

Interesting; my 2002 Moonwatch was probably in the +10-12s/day range...and considering what’s available now, from Omega and other brands, I have to say I’m hugely dissuaded from buying another one this year. I just cannot spend thousands of pounds on something that imprecise - whether I love the watch for other reasons or not.

Reborn · Jun 24, 2018

I would be very happy if my new Omega speedmaster is within +/- 6 seconds a day....but 12 secs is a bit on the high side. no?

Archer · Jun 24, 2018

Reborn
I would be very happy if my new Omega speedmaster is within +/- 6 seconds a day....but 12 secs is a bit on the high side. no?

Once again, Omega specs state that it should run between -1 and +11 per day. It's not a chronometer...

Reborn · Jun 24, 2018

Archer
Once again, Omega specs state that it should run between -1 and +11 per day. It's not a chronometer...

I see. That's a fair point. Guess I should not compare them to some of my Rolexes which are chronometers. Got it!

Archer · Jun 24, 2018

Reborn
I see. That's a fair point. Guess I should not compare them to some of my Rolexes which are chronometers. Got it!

Rolex or any other COSC watches. It's not that they can't run well, but the tolerances are wider than with a COSC watch, so more variation is accepted from the factory.

Having said that, with some work, most of these can be made to run much better than the specs, but you have to have a watchmaker that is capable and willing to do so. The factory (any factory, including Rolex) doesn't keep adjusting after the watch meets their specs - as soon as it gets within specs, it's done.

Cheers, Al

CSG · Jun 24, 2018

I recently had my 2002 Speedmaster Moonwatch regulated by my local watchmaker (who's now 91!). It had been running about 15+ seconds fast per day and I brought it to him to check out. He tried regulating it while I waited but adjusted it so that it ran about 15 seconds a day slow. He said it was just a quick try but that if he missed it, bring it back and let him run it for a few days. I got it back a week later and it is running within a couple seconds a day now. My cost? Under $40. Since yesterday (simply using a US time app on my phone to check), it's right on the money.

Archer · Jun 24, 2018

CSG
I recently had my 2002 Speedmaster Moonwatch regulated by my local watchmaker (who's now 91!). It had been running about 15+ seconds fast per day and I brought it to him to check out. He tried regulating it while I waited but adjusted it so that it ran about 15 seconds a day slow. He said it was just a quick try but that if he missed it, bring it back and let him run it for a few days. I got it back a week later and it is running within a couple seconds a day now. My cost? Under $40. Since yesterday (simply using a US time app on my phone to check), it's right on the money.

If all it needs is regulation, the pretty much any watchmaker should be able to handle that. If it needs adjusting, then that may be a different matter depending on how far you want to go with it.

Cheers, Al

ac106 · Jun 24, 2018

Mongooseman
Interesting; my 2002 Moonwatch was probably in the +10-12s/day range...and considering what’s available now, from Omega and other brands, I have to say I’m hugely dissuaded from buying another one this year. I just cannot spend thousands of pounds on something that imprecise - whether I love the watch for other reasons or not.

Buy a quartz

jetkins · Jun 24, 2018

Archer
The factory (any factory, including Rolex) doesn't keep adjusting after the watch meets their specs - as soon as it gets within specs, it's done.

Excellent point, Al.

Pun · Jun 24, 2018

Mongooseman
Interesting; my 2002 Moonwatch was probably in the +10-12s/day range...and considering what’s available now, from Omega and other brands, I have to say I’m hugely dissuaded from buying another one this year. I just cannot spend thousands of pounds on something that imprecise - whether I love the watch for other reasons or not.

I don’t know whether all Speedmaster Moonwatches run that way. Mine vanilla moonwatch is under 2 years old and runs +4 seconds a day. My another TinTin Moonwatch runs even better at +3 spd!

I may be a lucky guy but I assume most of Speedies run within the limits explained by Archer hereinabove.

I think the most mechanical watches are unpredictable in accuracy and need some attention, if you’re particular about it. I was finicky about the accuracy but now I’ve changed my attitude after I realised how these brands put scratches etc while mishandling my precious pieces.

For the record here, my Rolex Explorer 214270, that’s also under 2 years and should confirm to +-2 spd, runs 4 spd....

larryganz · Jun 25, 2018

The below is not rate testing in accordance with Omega procedures, it's just wearing it for 8-24 hours and seeing what the rate was during that time.

I might set my 2013 Speedy Pro to atomic time and wear it 24/7 for a few days, and check the timekeeping 1-2x per day. Each time I check the rate for that 8-24 hour period, it would be anywhere between -2.9 sec/day and +12 sec/day. But it tends to average out over a 10-15 day period of use at between +3 to +7 sec/day.

Earlier this year, I tracked the timekeeping on the 2013 for 7 weeks (keeping it wound up 1-2x a day, and measuring the rate 1-2x a day) while either wearing it or storing it in any of the 6 positions equally at rest, and it only gained 266 seconds in that time = average of about +5.4 sec/day.

However, my 1976 Speedmaster Pro will consistently run between -0.5 to +2.8 sec/day on the wrist (measured 1-2x a day), over a several day period of wearing it 24/7. I have only checked it's timekeeping over a 3-4 day period about 1-2x a year just to be sure nothing is changing, and will just enjoy it the rest of the time.

After it was serviced in 2014 I wore it for 4 days straight and it only gained 10.6 seconds in that time, and last fall I wore my '76 for 9 straight days and it only gained 10.8 seconds during that time!

jetkins · Jun 25, 2018

If your watch is gaining 12 seconds per day, I'll wager you're leaving it overnight in an orientation in which it continues to gain overnight. Instead, you might like to experiment with different static orientations to find the one that causes it to gain the least - or if possible, where it actually loses a little - then leave it in that position overnight after you take it off at bedtime.

My Tintin loses a few seconds in a normal day's wear, but when I place it crown-up on my dresser overnight, it gains time at an even faster rate. So if I'm wearing it for more than a couple of days, I'll alternate between leaving it face-up and crown-up overnight, which results in a net gain of less than a second per 48 hours.

Developing a symbiotic relationship with your watch is one of the great joys of mechanical watch ownership, IMHO.

jzzmusician · Jun 27, 2018

I guess I'm a bit loose on the accuracy thing. When I set my watch, I just check the time on my computer and round up to the next minute. I don't really know if any of my watches are accurate, but they're always a minute or so fast.

- Bob

jetkins · Jun 28, 2018

jzzmusician
I guess I'm a bit loose on the accuracy thing. When I set my watch, I just check the time on my computer and round up to the next minute. I don't really know if any of my watches are accurate, but they're always a minute or so fast.

Every now and then I check my watches with WatchTracker, but once I’ve established a trend I tend not to worry about them too much. My SMP, which is the one that spends most time on my wrist, gains a whisker under three seconds per day, so about once a month I simply pull out the crown and wait for a minute or so while the world catches up.

Owlsu · Jul 3, 2018

Mine has always run at +17 from brand new in 2016...not exactly great but I'll leave it until it's first service to sort it. I bought a radio Casio anyway for pinpoint precision which is always -0/+0.

ulackfocus · Jul 3, 2018

I wonder how many times each watch website has seen this same bemoaning of mechanical watch accuracy over the years..... 500? 1,000 each?

🙄

M'Bob · Jul 3, 2018

U ulackfocus
I wonder how many times each watch website has seen this same bemoaning of mechanical watch accuracy over the years..... 500? 1,000 each?

🙄

To your point, someone asked me today what time it was. It was seven minutes of the hour, but I rounded it and said, "five of." It was close enough. In the real world, for most of us, leading regular lives, the accuracy we perseverate about here is only important for posting material.

ras47 · Jul 4, 2018

My Speedmaster Co-Axial gains about a minute a month. 2 seconds a day is pretty great.

ppie58 · Jul 25, 2018

Is this all with or without engaging the chronometer? My speedy pro always runs a tiny bit faster without de chronofunction engaged.

Accuracy of Omega Moon watch professional

Archer

Mongooseman

Reborn

Archer

Reborn

Archer

CSG

Archer

ac106

jetkins

Pun

larryganz

jetkins

jzzmusician

jetkins

Owlsu

ulackfocus

M'Bob

ras47

ppie58

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