Seiko Prospex Sea 1968 Heritage Diver's GMT

PRE-ORDER. ETA DECEMBER 2025

Seiko Prospex SPB383J1 – 1968 Heritage Diver’s GMT

The Seiko Prospex SPB383J1 reimagines the bold spirit of Seiko’s 1968 diver, now enhanced with a modern GMT function for today’s explorers. Designed for those who travel between oceans and time zones, this automatic watch combines rugged durability with refined Japanese craftsmanship.

Automatic Caliber 6R54 with 72-hour power reserve and independent GMT hand

200 m water resistance and a unidirectional ceramic bezel for diving precision

Sapphire crystal with anti-reflective coating for clear readability

LumiBrite on hands, markers, and bezel for superior low-light visibility

Stainless steel 42 mm case and bracelet with secure folding clasp

With its sharp black dial, balanced proportions, and dual-time functionality, the SPB383J1 delivers reliability and elegance in equal measure — perfect for both daily wear and adventure.