"Seamaster Cosmic" was given a pet name that means space. It is also a model that has evolved the standard Seamaster into a more sports watch. Currently, there is also something called Seamaster Cosmic 2000 on sale, which has a hatchback format, but the early Cosmics had a whole case, probably because they were conscious of sportiness, and had a more solid feel than later models. It is waterproof. In terms of maintenance, hatchback models are probably easier. The dial is also a very rare type of Seamaster Cosmic that uses a three-dimensional two-tone dial.
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