Spinnaker’s collaborations have often leaned into creative, story-driven design, and their latest project is one of the most imaginative yet. The new Fleuss Automatic Seconde/Seconde/ 2025 Edition brings together the British-based microbrand’s nautical DNA with the tongue-in-cheek artistic vision of Seconde/Seconde/ — the Parisian design studio known for reimagining watches with humor and hidden symbolism.

This special release arrives in two distinct sizes, each limited to just over a thousand pieces. With ghostly visuals, glow-in-the-dark accents, and a mix of tool-watch toughness and conceptual flair, it’s a collaboration perfect for the Halloween season.

A Hauntingly Fun Take on the Fleuss

At its core, this release is a reimagining of Spinnaker’s popular Fleuss diver, a watch named after Henry Fleuss, a 19th-century diving pioneer. But in the hands of Seconde/Seconde/, the normally rugged, vintage-inspired diver takes on a more whimsical personality.

Both versions — nicknamed the “Phantom Steel” (40 mm) and “Phantom White” (43 mm) — feature eerie, ghost-themed design cues that playfully reference the supernatural. The dial has a misty, semi-translucent texture with faint “phantoms” drifting across its surface, a fitting nod to Seconde/Seconde/’s offbeat design language.

The watches come housed in solid stainless-steel cases with sunray-brushed bezels and sapphire crystals with anti-reflective coating. Each caseback is individually numbered, emphasizing their limited-edition nature — 1,050 units for the 40 mm model and 1,150 units for the 43 mm.

Design and Wearability

The Phantom Steel (40 mm) version hits a sweet spot for modern everyday wear, offering a balanced size and comfortable proportions at around 12.5 mm thickness. The Phantom White (43 mm), on the other hand, delivers a bolder wrist presence with slightly thicker dimensions (about 13.5 mm) and a 51 mm lug-to-lug span.

Both watches carry a reassuring 150 m of water resistance, keeping their dive-ready DNA intact. The screw-down crown, solid construction, and luminous hands and markers make them capable companions for both casual and aquatic settings.

At the heart of the watch is its unmistakable phantom dial — ghostly white, green, and aqua motifs that come alive under low light. The glowing indices and hands create an eerie, animated scene that feels straight out of the supernatural. The bright green lumed nylon strap amplifies the glow, adding an electrifying touch that turns the whole watch into a color-charged spectacle.

From a visual standpoint, this is where the Seconde/Seconde/ influence really shines. Between the spectral dial elements, soft lume glow, and unique presentation, these Fleuss editions stand out immediately in a sea of traditional divers. They feel modern, experimental, and self-aware — a refreshing break from the overly serious tone often seen in dive watches.

Powering the Phantom

Interestingly, Spinnaker chose different movements for each size. The 40 mm “Phantom Steel” uses the Miyota 9015, a high-beat automatic movement known for its smooth sweep and slim profile. Meanwhile, the 43 mm “Phantom White” is powered by the Seiko NH35, a reliable workhorse movement with hacking and hand-winding capabilities.

This split approach is somewhat unusual — typically, brands use the same calibre across sizes — but it makes sense from a design standpoint. The Miyota’s thinner profile suits the more compact 40 mm case, while the NH35 offers robust dependability in the larger build.

Final Thoughts

The Spinnaker Fleuss Automatic Seconde/Seconde/ 2025 Edition is another creative collaboration that celebrates fun and experimentation in watch design. By combining Spinnaker’s nautical heritage with Seconde/Seconde/’s conceptual artistry, the result is a duo that feels fresh, collectable, and surprisingly versatile.

The limited production numbers — 1,050 and 1,150 pieces — give them a sense of exclusivity, while the price point (around $475–$525 USD) keeps them accessible to those who appreciate design-driven watches without venturing into luxury territory.

Whether you’re drawn to the compact 40 mm Phantom Steel, or the larger 43 mm Phantom White that commands more wrist presence, both capture the spirit of a collaboration done right: bold, playful, and just the right amount of spooky.

Specs, Pricing & Availability

Brand: Spinnaker

Model: Fleuss Automatic Seconde/Seconde/ 2025 Edition

Reference: SP-5170-11A-P, SP-5170-11B-P

Dial: Ghost-themed semi-translucent dial with “phantom” graphics

Lume: Luminous hands, markers, and additional glow-in-the-dark strap

Case Material: Stainless steel

Diameter: 40 mm (Phantom Steel) / 43 mm (Phantom White)

Thickness: 12.5 mm / 13.5 mm

Crystal: Sapphire with anti-reflective coating

Case Back: Exhibition, individually numbered

Water Resistance: 150 m (15 ATM)

Strap/Bracelet: Stainless-steel bracelet + additional nylon strap

Lug Width: 20 mm / 22 mm

Movement: Automatic

Calibre: Miyota 9015 (40 mm) / Seiko NH35 (43 mm)

Power Reserve: Approx. 40 hours (NH35) / 42 hours (9015)

Functions: Hours, minutes, seconds, date

Price: $475 – $525 USD

Availability: Pre-order closes 27th October. Orders will ship in May 2026

Limited Edition: Yes, 1,050 pieces (40 mm) / 1,150 pieces (43 mm)