Seiko’s latest PADI collaboration brings one of its best-known Prospex case shapes into anniversary territory.
The Prospex Mechanical PADI 60th Anniversary Limited Edition “King Turtle” celebrates six decades of the Professional Association of Diving Instructors with a bright, practical diver that leans into the model’s chunky-tool-watch personality.
It’s also a reminder that the Turtle remains one of Seiko’s most recognisable modern dive-watch silhouettes, not because it’s subtle, but because it’s so unmistakably itself.
At a glance
- Seiko has launched a Prospex Mechanical PADI 60th Anniversary Limited Edition “King Turtle” limited to 8,000 pieces.
- The watch pairs a 45mm stainless steel case with a blue PADI globe-inspired dial, ceramic bezel insert and sapphire crystal with cyclops lens.
- Priced at £650, it uses Seiko’s automatic 4R35 movement and is water resistant to 200 metres.
The Turtle case gets the anniversary treatment
The Turtle name began as collector shorthand for the rounded cushion case that sits broad and curved on the wrist, like a shell.
Over time, the nickname became part of the watch’s identity, joining Seiko’s other enthusiast-born names such as Tuna, Sumo and Samurai.
This release uses the higher-spec King Turtle formula, which means it moves beyond the standard Turtle with a sapphire crystal and scratch-resistant ceramic bezel insert.
The result is still an approachable Prospex diver, but one with tougher external hardware and a more polished feature set.
A blue PADI dial with proper dive-watch clarity
The dial is the clearest anniversary cue here, taking inspiration from the PADI 60th anniversary globe logo and translating it into a vivid blue textured display.
Red accents on the seconds hand and the “Diver’s 200m” text give the watch the familiar PADI colour signature without overwhelming the layout.
Large Lumibrite markers and broad hands keep the display anchored in practical dive-watch territory, which matters on a watch this visually assertive.
A day-date display sits beneath the cyclops lens, adding everyday usefulness even if the magnifier gives the dial a deliberately off-centre character.
The 45mm case wears like a proper tool watch
At 45mm across and 13.2mm thick, this isn’t Seiko chasing the current appetite for compact case sizes.
The King Turtle is broad, confident and unapologetically functional, with the kind of wrist presence that feels rooted in the larger dive watches of the 2000s.
The reinforced silicone strap uses an accordion-style construction, a practical detail designed to stretch over dive equipment and accommodate changes in wrist size under pressure.
It’s a small reminder that, beneath the anniversary colour scheme, the watch still belongs to Seiko’s long line of accessible mechanical divers.
Details & Specifications
| Brand | Seiko |
|---|---|
| Model | Prospex King Turtle PADI 60th Anniversary Limited Edition |
| Reference | HBB002K1 |
| Case size | 45mm diameter x 13.2mm thickness |
| Case material | Stainless steel |
| Dial | Blue textured dial with PADI globe logo inspiration |
| Crystal | Sapphire crystal with cyclops lens |
| Bezel | Ceramic insert |
| Movement | Seiko calibre 4R35 automatic |
| Power reserve | 41 hours |
| Frequency | 3Hz |
| Functions | Hours, minutes, seconds, day and date |
| Water resistance | 200m / 20 bar |
| Strap or bracelet | Stainless steel bracelet and reinforced silicone strap |
| Limited edition | 8,000 pieces |
| Price | £650 |
Inside, the calibre 4R35 is a familiar Seiko workhorse, valued less for romance than for its straightforward reliability and wide use across the brand’s mechanical collections.
For collectors who like their dive watches compact, this one won’t be the obvious choice.
For those who want a colourful, robust Seiko with real wrist presence and a meaningful connection to recreational diving culture, the PADI 60th Anniversary King Turtle makes a clear and appealing case for itself.
