pianomankd
·My 2019 Aqua Terra 42mm runs +/0.3 seconds a day. It's insanity how accurate this watch is.
True but it can only go downhill from here.
I’m kind of bummed with the accuracy of my Speedmaster.
I received a couple of months ago as a 40th birthday present and, even though it’s within spec, +9 seconds a day is enough to make it in accurate within a week.
I tried all of the different resting positions overnight and +9.5 spd is the best I’ve gotten, and that’s either dial down or crown down.
You can always get it adjusted for wear. That's something reasonable to do.
Is adjusting something my AD can do?
Well, yes, at some point it will require servicing. They never go back together in exactly the same way they came apart. Just a fact of life.
I’m kind of bummed with the accuracy of my Speedmaster.
I received a couple of months ago as a 40th birthday present and, even though it’s within spec, +9 seconds a day is enough to make it in accurate within a week.
I tried all of the different resting positions overnight and +9.5 spd is the best I’ve gotten, and that’s either dial down or crown down.
From watchtracker app:
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My Speedmaster FOIS which I got new in 2019 has always been running about 7-8s fast a day, which I'm OK with as I wasn't expecting chronometer level accuracy. From what I've read on this forum the accuracy of 1861 powered watches can vary greatly. Most people seem to be getting +5 to +10 secs a day but a few have been lucky enough to get watches running at +2 secs a day from new. Very much luck of the draw and whether your watch was put together on a Friday afternoon 😉. To me it seems that as long as the watches leave the factory within specs (-1 to +10 spd) then it's good enough for Omega. They don't all have to be running exactly the same.
Not being facetious here, just adding some new info. to the thread...
I just did the third battery change since acquiring this watch, and it appears to be stabilizing to about +0.1 sec/day. Not bad for a 45-year old watch. On my last battery run (which typically goes for about 10 mos.) the watch averaged +0.5 sec/day so we'll see how things go in the longer term for this run.
Here's an interesting advert I found, which makes reference to the definition of a Marine Chronometer.
That one is kind of cheating though, even if its one of the most amazing quartz models they’ve ever made. 2.4Mhz is a hell of a step up from anything else.
Is your Speedmaster powered by Caliber 1861 or is yours the latest one with Caliber 3861? If yours is a 1861 then it's just within specs. However, if it's a 3861 then it's well outside specs as it's supposed to be a METAS certified chronometer running between 0 to +5 secs a day. If its a 3861, then I'd just take it back to Omega to get it fixed under warranty.