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Earth Day watch launches can feel predictable: a recycled strap here, a green dial there, and the rest is business as usual. The Spinnaker Hass Automatic 4ocean Limited Edition is interesting because it tries to make the sustainability angle structurally tied to the product rather than just cosmetically adjacent. The dial is made from recovered ocean plastic, and the collaboration is with 4ocean, an organization built around ongoing cleanup operations and job creation in coastal communities most affected by pollution.

The collaboration: a cause partnership that is visible on the wrist
Spinnaker’s pitch is straightforward: take waste that would have stayed waste and turn it into the most emotionally loaded part of a watch, the dial. Because recovered plastic is inherently inconsistent, each dial is described as having its own texture and imperfections, which in practice should mean no two pieces look exactly alike. That is one of the few “limited edition” hooks that can be materially true without leaning on artificial scarcity.
The collection comes in four variants, each tied to a marine ecosystem focus: Manatee, Sharks, Sea Turtles and Coral Reefs. That approach matters because it frames the series as a set, not a single token “eco” reference, and it gives buyers a clear choice based on what they want to support or simply what resonates visually.

A sustainability story only travels so far in watches if the base product feels compromised. Here, Spinnaker anchors the collaboration in the Hass Automatic platform and keeps the headline specs aggressive for the price.
You are looking at a 43 mm stainless-steel diver with a notably chunky 17 mm thickness and 30 ATM (300 m) water resistance, plus a screw-down crown. In other words, the brand is positioning this as a real sports watch, not a desk diver with a conscience.

Inside is a Japanese automatic three-hander with date, specified as M-MIY-8215-D3BKW. The Miyota 8215 family is widely used because it is robust, available, and inexpensive to service.
Spinnaker lists an anti-reflection coated sapphire crystal and Swiss luminous detailing. Sapphire at this price point is increasingly common, but still meaningful when paired with 300 m water resistance, because it signals Spinnaker wants this to be spec-credible, not just story-credible.

Limited edition strategy: scarcity that feels proportional
Each variant is limited to 375 pieces, which is small enough to feel genuinely limited but not so tiny that it reads as artificial hype. The bigger question is whether you value the specific 4ocean connection, because that is what makes this edition meaningfully different from a standard Hass Automatic.

Alongside sapphire and 30 ATM water resistance, Spinnaker highlights Swiss luminous detailing, aimed at keeping the recycled-plastic dial legible after dark.
In the $500 segment, lume is often where brands cut corners. By specifying Swiss luminous detailing, Spinnaker is signalling that the environmental story is not meant to dilute core dive-watch usability.

Pricing, Availability & Where to Get One
At an RRP of $500, this sits in the busy lower-mid microbrand segment where buyers expect at least two of three things: credible dive specs, distinctive design, and a story that feels authentic. Spinnaker is aiming for all three.
Spinnaker positions the release around Earth Day, with a stated launch date of April 24, 2026. If you care about a specific variant, the limited quantities suggest buying close to launch is the safest strategy.

Case Diameter: 43mm
Case Thickness: 17mm
Case Material: Stainless Steel
Water Resistance: 30 ATM
Caliber: M-MIY-8215-D3BKW
Crystal: Anti-reflection coated sapphire crystal
Function: Three hands with date
The Spinnaker Hass Automatic 4ocean Limited Edition is best understood as a spec-first diver that happens to carry an unusually literal sustainability narrative. The dial material is not a minor trim detail, it is the core of the aesthetic, and the 4ocean partnership gives the theme a clearer spine than many Earth Day releases.

If you want a bold, modern dive watch at $500 with sapphire, 300 m water resistance, and a dial that should look meaningfully different from piece to piece, this is squarely in your lane. If you are thickness-sensitive or want a movement that is part of the story, you will probably be happier with a slimmer diver or a more mechanically focused alternative.




