Seiko Prospex Marinemaster 1968 Heritage JAMSTEC Limited Edition HBF002 Finish_Macassar Countdown start time setting range:

Countdown start time setting range: 1 second to 24 hours (1-second increments

chronograph with flyback/stop second/30 minutes counter/12 hour counter

This reference is powered by Zodiac's own STP 1-11 automatic movement

Dial: Black with applied hour markers and Lumibrite fill

Seiko Prospex Marinemaster 1968 Heritage JAMSTEC Limited Edition HBF002 Finish_Macassar Countdown start time setting range:Inspired by the routes carved by polar icebreakers Seikos legacy of testing the limits of the modern sports watch and supporting marine conservation continues through its partnership with the Japan Agency for Marine Earth Science and Technology (JAMSTEC), which began in the 1980s. In 1983, two professional divers watches rated to 600 meters were successfully tested aboard the SHINKAI 2000, a manned research submersible which was operated by JAMSTEC.