November 5 2025

Seiko’s New SPB545 Glows With Ocean Depths And Heritage Design

MRSTATELESS NEW RELEASES, SEIKO 2025, Diver, Limited Edition 0

Seiko continues to build on its rich diving legacy with the introduction of a new Prospex 1965 Heritage Diver’s Watch “Save the Ocean” Limited Edition SPB545. This latest addition stays true to the refined design language and technical upgrades of the recently unveiled Heritage Diver models, while standing out with a vivid ‘tranquil teal’ blue dial and a gray bezel—a striking combination that beautifully captures the essence of the sea it seeks to protect.

A Legacy Refined

The 1965 Diver’s reissue has already been praised for its balanced proportions and modernized refinements. Just like its siblings, the SPB545 maintains the same compact yet robust case dimensions—40 mm in diameter, 13 mm thick, and 46.40 mm lug-to-lug—offering a perfect balance between wrist presence and comfort. The ergonomic case profile and subtly reworked bevels make it wear smaller than its numbers might suggest, reaffirming Seiko’s mastery of proportion and design.

The stainless steel case receives Seiko’s super-hard coating, ensuring exceptional durability and resistance to scratches. Water resistance remains an impressive 300 meters, up from the 200m of earlier generations, emphasizing Seiko’s continuous evolution in performance. Complementing the sturdy case is a 3-link steel bracelet finished with the same coating and equipped with a folding clasp with dive extension—ready for both everyday wear and underwater adventures.

A Dial Inspired by the Ocean

The new ‘tranquil teal’ blue dial is where the SPB545 truly shines. It evokes the shifting tones of the sea—from shallow turquoise shallows to deeper blue depths—symbolizing Seiko’s connection to marine exploration and preservation. The laser-engraved gray bezel harmonizes perfectly with the dial’s vibrant hue, giving the watch a modern yet timeless appeal.

The dial layout follows the refined aesthetic introduced in the latest 1965 Diver’s models: a round date window at 4:30 with a white background, applied markers filled with LumiBrite, and the signature “Automatic 3 Days” inscription that highlights the improved movement inside.

Power and Precision Beneath the Surface

Inside beats the Caliber 6R55, an evolution of the well-known 6R35 movement. The upgrade brings a 72-hour (3-day) power reserve, providing dependable autonomy for extended use. Combined with Seiko’s proven reliability and smooth automatic winding, this movement ensures that the SPB545 is as capable as it is beautiful.

Continuing a Legacy of Ocean Conservation

As part of Seiko’s “Save the Ocean” initiative, the SPB545 not only honors the pioneering spirit of the 1965 Diver’s Watch but also supports marine conservation efforts. Limited to 4,000 pieces worldwide, this model is both a collectible timepiece and a meaningful contribution to ocean preservation.

Availability and Price

The Seiko Prospex 1965 Heritage Diver’s Watch “Save the Ocean” SPB545 will be available starting January 2026 at a retail price of GBP 1,300.

A harmonious blend of heritage, technical refinement, and purpose, the SPB545 stands as a vibrant tribute to the sea—proof that Seiko continues to evolve while staying true to the depths of its legacy.