zOwie Omega Discussion Forum

You're my kind of Omega-ite, BG. That USNO clock is music to my ears three times a day.

Precision accuracy of my automatic chronometer (hate to generalize beyond that) is very much dependant upon movement orientation.

This is more or less recognized in your Omega Operating Instructions under the COSC certification discussion. Five movement orientations are provided for over the course of 15 days. Temperature variability is also addressed, and may be more or less a factor in your case, depending upon whether or not you remove your watch at night (and otherwise), weather (inside versus outside here in Southeast Michigan is quite the difference in late-December).

Somewhere I read that a way to "correct" time gain/loss that an owner might consider excessive is to experiment w/ these orientations, and then store the watch at night in the orientation that compensates. For example, if the watch gains, and de-wristing it and storing it an a face down orientation while you sleep causes it to lose, do that every night.

At the risk of sounding extreme, that not only blows my mind, but I think it's unreasonable!

Yeah, I guess it can be done and it may work. But if that's how an Omega must be cared for, then Omega isn't the watch for me! It's impractical, to say the least. Again, consider the premier SeMPC owner as our guide. James Bond never takes of his Omega Seamaster. Second, assuming he did -- for, um, that thing he might do where the person who he was with did not want him watching the time -- have you seen how clothes, et cetera, are so often tossed about?

"Hold on a moment, dear. I'll join you straight away, once I get my Seamaster properly oriented to keep good time while we're on the job."

You'd never hear Pierce Brosnan utter those words, and I'll put money on not hearing them from Daniel Craig.

Since COSC testing is at a given orientation for 24 hours, they don't need to monitor the movement at interim times. But that's not the case in the field, here. So I check mine between 8:30 and 9:30am (easy to remember, because I've just put my 7-year-old on the bus); between 2:45 and 3:45pm (just before I meet him at the bus); and, between 10 o'clock and 11:00pm (things have wound down w/ Number One Son, I've done whatever I have outstanding for the day around the house, and it's not a time I typically forget.

Here's what I've found over the last 46 days of close tracking on my 2254.50 SeMPC.

AM: Average gains between +0.5 and +1.1 seconds/day

Mid-day: Average gains between +0.25 and +1.0 seconds/day

PM: Average gains between 0.00 and +0.9 seconds/day

Additionally-- took the 2254.50 off my wrist for one 24-hour period to wear my 2531.80 to a meeting that required an "ego boost" for behind-kicking (performed as needed, thank you very much), and found the 2254.50 (no movement, oriented face up on a table) to have gained 6 seconds for the next morning check, 5.75 seconds mid-day. So my experience (w/ the 1120 caliber movement) seems to be just the opposite of yours.

People get into Omega watches and come here for all sorts of reasons, BG. This sort of examination and interest in performance is very important to me, and quite interesting. So I really like what you're doing and appreciate your questions.

Happy Boxing Day.