Seiko’s reputation for diver’s watches is the direct result of a long tradition of innovation that stretches back over 50 years, during which time Seiko has been responsible for creating many of the features that are now widely accepted as the industry norms. From the first titanium case for a diver’s watch to the invention of the accordion-style strap and of the one-piece case structure with outer protector, Seiko has been a pioneer in the field, and we are proud that part of the current ISO standard was developed with Seiko’s own standard as its base.