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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: Caliber 2628
In Response To: Caliber 2628 ()

: Which movement is the Caliber 2628 based on?
: Geo

That is the co-axial variant of caliber 1128 which is used in the standard white and black faced Seamaster GMT models. Caliber 1128 is based on caliber 1120, with the addition of the GMT function. So, for all intents and purposes, caliber 2628 is a heavily modified ETA 2892-A2 movement that becomes caliber 1128 once Omega adds the GMT function. The addition of the co-axial escapement makes it caliber 2628.

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