SPB545

Prospex
Sea

Dec 2025 Release

Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition

Limited edition of 4,000 pieces

This Save the Ocean Limited Edition is inspired by the beautiful ocean colors of Okinawa, one of the world’s premier diving destinations.

A dial that captures the beauty of Okinawa’s ocean waters

The ocean surrounding Okinawa is renowned for its breathtaking beauty, with crystal-clear water revealing white sandy seabeds. This watch features a sunray-patterned blue dial that reflects light beautifully, evoking the serene image of sunlight shimmering on the ocean’s surface.

A refined color combination

A refreshing blue dial paired with a subdued gray bezel creates a sophisticated and sporty aesthetic.

A new clasp designed for comfort and operability

The new clasp can be adjusted in six steps, each measuring about 2.5mm, for a total range of approximately 15mm. It allows for a comfortable fit at all times, accommodating changes in wrist size during diving and daily life.

Specifications

Movement

Caliber Number

6R55

Movement Type

Automatic with manual winding

Precision

+25 to -15 seconds per day

Power reserve

Approx. 72 hours(3 days)

Jewels

Functions

Stop second hand function

Case/Band

Case Material: Stainless steel
Case Size: Thickness:13.0mm
Diameter:40.0mm
Lug-to-lug:46.4mm
Crystal: Curved sapphire crystal
Crystal Coating: Anti-reflective coating on inner surface
LumiBrite: LumiBrite on hands, index(es) and bezel
Clasp: Three-fold clasp with secure lock & push button release, solid & slide adjuster
Distance between lugs: 20mm

Other Details

Water Resistance

300m / 1000ft diver's

Magnetic Resistance

4,800 A/m

Features

LIMITED EDITION on the case back
Serial number engraved on the case back
Unidirectional rotating bezel
Screw-down crown
Three-fold clasp with secure lock
Screw case back