SEIKO Prospex SPB545 - Pre-Order Available January 2026

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SEIKO Prospex SPB545 - Pre-Order Available January 2026

$1,400.00

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

24

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

20

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

  • In an actual product, the case back direction might be different from the photograph.

Pre-Order, Available January 2026