Seiko Prospex SRPK01K1 'Great Blue' Turtle Scuba Diver's Watch - Special Edition - W25417

Ref. SRPK01K1

The Turtle name came from Seiko enthusiasts who noticed the cushion-shaped case's resemblance to a shell, and this edition extends a long-running partnership with PADI into what is arguably its most considered expression yet. The textured blue dial is a deliberate attempt to render the view looking upward from depth — light breaking and scattering across the ocean surface — and at 45mm it carries enough presence for that idea to land without feeling theatrical. A ceramic bezel insert in the same palette aids readability in low visibility, and the Great Wave motif engraved on the caseback, drawn from Hokusai, quietly continues the oceanic theme somewhere the wearer keeps to themselves. At 13.2mm thick it is not a slim watch, but for something rated to professional diving standards under ISO 6425 certification, it sits closer to a dress watch's profile than the category usually allows, and the lug-to-lug of 47.7mm means it tracks the wrist rather than bridging it. The bracelet carries a diver's extension built into the clasp, which matters when the watch is worn over a wetsuit rather than adjusted as an afterthought. A portion of proceeds from sales goes to PADI's Ocean Cleanup campaign, which makes the collaboration something more than a co-branding exercise.

Reference

SRPK01K1

Brand

Seiko

Case size

45mm

Case thickness

13.2mm

Case material

Stainless steel

Case shape

Round

Dial

Blue

Crystal

Sapphire

Movement

Automatic

Calibre

4R36

Functions

Day-date

Water resistance

200m

Bracelet / strap

Stainless steel bracelet

Strap colour

Silver

Clasp

Three-fold clasp

Lume

LumiBrite

Retailer

F.Hinds Jewellers