Seiko diver “62mas”

Seiko’s legacy in professional tool watches truly began in the 1960s, a time when underwater exploration and diving were rapidly expanding. In 1965, the brand introduced its first professional diver’s watch, the 62MAS (Ref. 6217-8001), setting the foundation for every Seiko diver that followed.

Designed with purpose and reliability at its core, the 62MAS offered features that were groundbreaking for the era: a robust stainless steel case, 150 meters of water resistance, and a highly legible dial with luminous markers to ensure visibility in the depths. Powered by the automatic 6217A movement, it was not just a functional tool but also a testament to Seiko’s ambition to compete with the established Swiss manufacturers.

The 62MAS has since become a legendary model among collectors, appreciated not only as Seiko’s very first diver but also for its timeless proportions and understated elegance. The grey sunburst dial, tritium lume that has aged to a warm patina, and the utilitarian 37 mm case size give this piece both vintage charm and historical importance. Produced in 1967, this example has been fully serviced, maintaining the authenticity and integrity of its design. More than just a watch, it represents the beginning of Seiko’s journey into the world of professional diving instruments — a journey that would ultimately produce some of the most respected and sought-after tool watches in history.