It looks quite similar (but not identical) to this 1983
Seamaster Mariner III in the Omega Database. They seem to have been issued in a range of
deeply '80s colour schemes. If that is indeed what this watch is, then it's a direct descendant of those incredible
MegaQuartz marine chronometer models that popped up a few days ago. There is a discussion of these watches
here and
here.
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