Ever since its first diver’s watch in 1965, Seiko has developed new technologies, features, and designs that have made the Seiko Prospex diver’s watch collection a favorite among professional and recreational divers the world over.

Continuous innovation and enhancements over the decades in safety, reliability, legibility, and ease of use have made Seiko a leader in diver’s watches.

The Marinemaster is Seiko’s flagship series for diver’s watches. Equipped with a robust and high-performance movement with stable accuracy designed exclusively for diver’s watches, it represents the top tier of Prospex watches in a diving category that is integral to the history and culture of Seiko.