zOwie Omega Discussion Forum

And I don't just mean in marriage.

While I've heard a lot about the so-called "settling down" period for mechanical movements, I've never been able to find data to support this.

On the other hand, I have been running regular checks of my 2254.50 (1120 movement) SeMPC for 50 days now, comparing it against the USNO Atomic Clock. Never once has it been outside of Omega, let alone COSC specifications. During the first week, I saw peak gains of +4.00 and +2.50 seconds/day; after that, always between 0.00 and +1.50 s/d now. I wear the watch 24/7, w/ the exception of showering (which may change, if I feel I have to "prove" myself to Sam at some point). It's never been on a winder.

Last week, I did have this watch off-wrist for about 24 hours, tho' still monitoring it, and I noticed a +6.0 second gain during that period.

As to COSC performance, for Pete's sake, we're talking about a test that's pass/fail based on 15 days. Yet the owner has to wait several months to see how that same movement, now installed into a case, wil "settle in"? I don't. If my new watch is out of Omega specifications between the time I buy it and my AD's return period, it goes back. Mind you, "passing" COSC specifications means an average precision accuracy w/in -4.0/+6.0 based on 15 data points (daily). And -- I now notice on the COSC certificate for my 2531.80 (1120 movement), tha watch gained 11.9 seconds on day #11, altho it "passed" because the daily "average" was w/in specifications.

Not sure what the circumstances of your "replacement" from Swatch USA was. But if we're talking about a new watch, bought from an Authorized Dealer w/ warranty, I agree w/ John that I'd send it back if it were me -- for anything out of specifications.

Again: I have already.

Let us know how this plays out. Seems like we had another Post recently along not too different lines, and the buyer was going to hold his AD's feet to the fire by following up here on the satisfaction they gave him.