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Opened July 1999, zOwie is the Internet's first and longest running discussion forum dedicated to Omega brand watches.

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Re: Omega 2500 movement - concerns
In Response To: Omega 2500 movement - concerns ()

My thread titled "Got my Bond GMT Today" dated 7/30/05 kind of addressed the same issue with the 2628 "A" caliber.

I don't think I would worry too much about it. The way I understand it is the change was to better enable Omega to mass produce the movement more efficiently. They changed the size of a couple of internal parts (excuse my lay terms but I am not a watchmaker) that effect the bph. I guess it is easier to produce the parts now and by doing it, there was a net positive gain in output.

The 2500 "B" may be a more expensive movement as well as more precise. The DeVille GMT's have used the 2628 "A" for years and I have not read any problems. It also runs at 28,800 bph.

I also read somewhere in a letter from Omega stating that the changes did not significantly change the quality of the movement. For better or for worse I wonder.

Of course this is just my general understanding and I could be wrong.

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