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The 1975Professional Diver's 600m Re-creation
The 1975Professional Diver's 600m Re-creation
The 1975 Professional Diver's 600m
Original model
It all began with a letter from Hiroshima. The correspondent, a professional diver, explained that no watch could withstand the stresses and strains he experienced when working at depths greater than 300m. Inspired, Seiko engineers got down to work. Years of research development paid off in 1975 with the introduction of the world's first titanium cased diver's watch: the Professional Diver's 600m.
This model has a titanium one-piece case and an outer case protector as same as 1975 original.
The case construction and dial layout are loyal to the original, as are the unique hour markers and the crown, while the water resistance has been increased to 1,000m. The outer case material is zirconia ceramic which is seven times harder than steel protecting the case from shock.
