1975
Professional Diver 600m
A full-fledged diver’s watch set within the world’s first titanium case, with a one-piece structure and saturation diving capacity to 600 meters deep. More than 20 patents were awarded for the design of the watch casing alone, including patents on airtightness and durability.
Name | Professional Diver 600m |
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Time/Period | 1975 |