Prospex Automatic Diver SPB375 tennis hand-assembled at Seiko's Shizukuishi watch

hand-assembled at Seiko's Shizukuishi watch studio with the increased torque necessary for smooth operation of the enlarged diver's watch hands

an automatic timepiece with a then exceptional water resistance of 150 meters

complementing the silver-to-black gradient dial

caliber 6R54

but also aesthetically

Prospex Automatic Diver SPB375 tennis hand-assembled at Seiko's Shizukuishi watchProspex PADI Special Edition. Designed for those who treat life as the ultimate adventure, Seiko Prospex keeps moving forward, meeting every challenge with technological excellence and winning design. This stunning Special Edition celebrates Seikos official partnership with PADI, the worlds leading scuba diver training operation, particularly in the distinctive patterned and gradated blue dial reflecting the surface of the ocean as seen from under