How accurate is your Omega?

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I have a Speedmaster Racing with the 9900 movement. At one point it seemed be be almost neutral, gaining a second here, losing one there. But at some point I noticed it was more consistently losing time, so I decided to track it recently. Over the course of a month 10/18 - 11/18 it lost 22 seconds. That averages out to less than a second per day. In reality, there were days it didn't lose any seconds, and days it lost 1. A few times it lost 2 seconds overnight.

That is still pretty remarkable accuracy, but I really wish it would run fast instead of slow. For my tracking I kept it in one resting position (face up), but prior experiments with resting position didn't seem to speed it up.
 
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Rolls-Royce never specified power output, simply declaring it “adequate.”

I think there are nine Omega watches on hand here and I declare their accuracy to be adequate.

I particularly enjoy not obsessing about extreme accuracy, preferring to enjoy wearing the watches. Inside of a minute a week and I'm delighted. Most of the vintage Omegas here can beat "railroad time" requirements of the early 20th century which was under 30 second deviation in a week's time. We just returned from a vacation of eight days in Switzerland and the early 1950s Omega Geneve selected for the journey remained well under a minute for the duration. How much under? Don't care.
 
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Mine is still accurate after 5 months. I don’t have specifics but I would hazard a guess at less than half a second a day.
 
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Aqua Terra 8900.
Accuracy typically 0 deviation. Sometimes looses .08 seconds a day.
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My 1999 2531.80 keeps better time than my overhyped cal 8800 2022 SMP
 
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I enjoy the Mechanical achievement that Omega has accomplished. That is part of my enjoyment. To spend the money on a watch of this price, I would hope accurate time keeping would be part of it. To marvel at the fact I’ve got 1second fast in 3 day is to admire the Swiss movement… yet that’s with dial up overnight. If I turn crown up I’ll balance that out. It’s truly a man made mechanical achievement. I’d imagine over a span of time that checking the accuracy would wear off.
 
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I’ll report on just one of my 13 Omegas. The one I’m wearing today. My salvaged calibre 351 bumper automatic which is close to 70 years old. I’m also wearing my 33 year old Rolex Date-Just which loses about 2 seconds per day (until I finish regulating it). I have the Omega set to the Rolex, and it has maintained its rate compared to the Rolex for about 5 days. Lots of folks report their expensive co-axial Omegas to keep time within seconds per week! But mine is a 70 year old bumper automatic! This one is good enough for me.

 
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I have a friend working at Swatch Group. He helped me when many years ago I had several Planet Ocean's with/without chronograph (around 2005-2010) and he adjusted them so they kept time very accuate.
The most accurate was a chrono which had +1 sec after three days. The other PO's were typically 0.5-1.5 sec/day.

Today I just bought a PO again and need yet to make some measurements

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Most recent two week period ending today = +0.35/day. Globemaster.
 
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Speedmaster 57' titanium, caliber 9300. Error around 0 s/d by android app ("watch accuracy meter"), beat error reported 0.2-0.6 ms. Wearing for about a week, no visible error either. Because of co-axial escapement number ris eported unreliable, only angle is significant:
 
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My 17 SMPc is 5 yrs old. Omega tech said was not needed to be serviced yet, Regulated 8 days ago.
Varied +/-1.5 spd and I simply lay it in one position or another to correct back to Zero.

Pretty accurate for a 5yr old 2500D. I’ll probably get it serviced next year or so.
 
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I would just say... who cares. watches are a jewlery ipece for men.
my omega SMP 300 2531.80 is running +/-2 per day. i have another watch which is running 1 min slow per day :/
love them both!

I also think the same. It's been around 2 months with my Speedmaster Racing and it's didn't even lose or gain a min.(I don't test it with a machine or so) So it should be in the range of +/- 1s per day! The good thing is as a daily I even don't need to think about to adjust in a month or two. But even if it would gain 3-4 min in 2 months i would be totally happy. In the end I like more it's material, design etc. like a jewellery.
 
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I’ll report on just one of my 13 Omegas. The one I’m wearing today. My salvaged calibre 351 bumper automatic which is close to 70 years old. I’m also wearing my 33 year old Rolex Date-Just which loses about 2 seconds per day (until I finish regulating it). I have the Omega set to the Rolex, and it has maintained its rate compared to the Rolex for about 5 days. Lots of folks report their expensive co-axial Omegas to keep time within seconds per week! But mine is a 70 year old bumper automatic! This one is good enough for me.



This old survivor has now been on my wrist for 16 days, and has picked up 37 seconds. Let’s say + 2 seconds per day. Not bad for a 70-year old non-chronometer bumper automatic that was rescued from a scrap heap. The previous owner had earnestly tried to destroy the watch. I had to replace the case and dial they were so bad.
 
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Just measured my reacquired 45.5mm PO Cal2500 after many years with only one single and daily watch (40mm Blancpain Fifty Fathoms GMT S/S). It picks up 0,3 seconds per day which is very satisfying.

When off at night and in a position where it goes -0.4 seconds per day it makes the watch keeping time percisely over a week.
 
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I have been wearing my SMP Diver (8800) for 12 days straight now (take it off only during bed time and rest it in a dial up position) and it has gained only 4.1 seconds during the whole time (Average +0.3 second per day)

Never used an app to measure the accuracy of my older watches so i don't know if this is good or extraordinarily good!

Anyone else have a METAS (or not) movement to compare their accuracy ?
My 3861 is about +30 seconds per week; more than I’d like but not terrible. I guess I need to break out the app and actually check it.
 
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What is the app and how does it work? Seems that merely noting time vs an accurate standard would be good enough?
 
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My '57 Seamaster Trilogy is deadly accurate, gaining around 2 seconds per every 30 days.

My latest acquisition, the '57 Railmaster Trilogy, which I took delivery of in early November and hasn't been off-wrist since nor time adjusted since that first day, is currently running at minus 4 seconds Atomic Time per a total of 45 days.

No complaints on either.
 
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I’ll report on just one of my 13 Omegas. The one I’m wearing today. My salvaged calibre 351 bumper automatic which is close to 70 years old. I’m also wearing my 33 year old Rolex Date-Just which loses about 2 seconds per day (until I finish regulating it). I have the Omega set to the Rolex, and it has maintained its rate compared to the Rolex for about 5 days. Lots of folks report their expensive co-axial Omegas to keep time within seconds per week! But mine is a 70 year old bumper automatic! This one is good enough for me.


This artifact is 10 seconds fast in the last five days. Calibre 351, bumper automatic fro the early 1950s. It had a rough life before I acquired it, but I am quite pleased with it. I know, it has a generic crown and crystal.