The Spinnaker Fleuss Automatic most commonly refers to the 43 mm SP-5055: an automatic, date-equipped watch with a 22 mm strap and a manufacturer-listed 15 ATM water-resistance rating. The name also covers variants with different strap and specification details, and Spinnaker sells a separate 40 mm Fleuss iteration. Check the reference on the caseback or product listing before applying any specification to a particular watch.
Which Spinnaker Fleuss Automatic do you mean?
Spinnaker’s US listing identifies the Prussian Blue SP-5055-08 as “Fleuss Automatic.” The SP-5055 family is the likely match for the unqualified name, but its colorways are not identical in every listed detail. The Fleuss 40, by contrast, is a distinct iteration with a different case size, movement and bracelet width.
The specifications below are manufacturer-listed, not independently tested. The SP-5055 figures are from Spinnaker’s current product listings accessed October 7, 2026; the Fleuss 40 details are from Spinnaker UK’s listing accessed the same day.
SP-5055: the 43 mm Fleuss Automatic
Case, dial and strap
Spinnaker lists the SP-5055 at 43 mm in diameter, 13 mm thick and 51 mm lug-to-lug, with a stainless-steel case and a 22 mm band. The Prussian Blue SP-5055-08 is listed with a sapphire lens with anti-reflective coating, a screw-lock crown, a red genuine-leather strap and a weight of 100 g. Those last details are specific to that listing, not a safe assumption for every SP-5055 colorway. Spinnaker’s Prussian Blue SP-5055-08 listing
#1 Best Overall
- Premium Craftsmanship – This men’s watch is expertly constructed with a 43mm 316L stainless steel case and a sapphire lens featuring anti-reflective coating. The rugged yet polished design ensures lasting durability with a touch of elegance.
- Precision Engineering – Powered by a Miyota 8215 automatic movement, this timepiece boasts a 41+ hour power reserve and 24 jewels, providing reliable and precise timekeeping essential for any adventurer.
- Ready for Adventure – With a screw-down crown and 150m water resistance, this watch is designed for the extremes. Whether diving into ocean depths or navigating the urban jungle, it ensures resilience and functionality in any environment.
- Comfortable Wear – The genuine leather strap enhances fit and comfort, ideal for prolonged wear. Adjusts seamlessly to your wrist, providing a secure fit that complements both casual and formal attire.
- Inspired by the Depths – Part of Spinnaker's Fleuss series, this timepiece draws inspiration from the heritage of vintage dive watches and pioneering underwater exploration, merging practical functionality with a stylish aesthetic for maritime history enthusiasts.
Other official listings illustrate the differences: Lumber Black SP-5055-01 specifies a brown genuine-leather strap and 95 g weight; Exuberant Orange SP-5055-0F specifies a tan leather strap. The Orange listing describes a sapphire lens without the same explicit anti-reflective-coating wording and calls the crown screw-down. Both list the same 43 mm, 13 mm, 51 mm dimensions and 15 ATM rating. Check the exact suffix when buying or identifying a watch. Lumber Black SP-5055-01 · Exuberant Orange SP-5055-0F
Spinnaker places 43–45 mm watches in its general large-wrist range. That is a brand sizing guide, not an independent fit assessment; the 51 mm lug-to-lug measurement may also matter when judging how the case sits across a wrist.
Rank #2
- Fleuss Dive Watch - Inspired by the golden age of the dive watch, the Fleuss is built with a nod to nostalgia. Using the best in watchmaking techniques, it's a rugged and reliable watch that goes from the beach to the boardroom with ease
- Nautical Design - Inspired by the captivating essence of life at sea, this watch is meticulously crafted with the adventurous spirit in mind, embodying the dynamic energy of maritime exploration
- STYLISH AND DURABLE - Meticulously designed with both fashion and endurance in mind, this watch features a 43mm stainless steel case and a brown leather strap, perfectly combining a bold, stylish presence with lasting durability
- WATERPROOF - With an impressive 150 meters water resistance, this men's watch is suitable for various water activities, from swimming to diving or any daily adventure that comes your way
- Spinnaker Watches - The legacy of the sea, the adventurous spirit and cutting-edge dive watch technology converge in Spinnaker watches, created for life beside, beyond, and below the sea
Movement and date
Spinnaker specifies a Miyota 8215 automatic movement with date, 21 jewels, a rate of 21,600 beats per hour and a 42-hour power reserve. These are maker-published specifications, not measurements from a performance test. The manual includes winding instructions to start the mainspring. SP-5055 product listing · Fleuss Automatic instruction manual
Water resistance and care
The SP-5055 listings specify 15 ATM water resistance. Spinnaker’s manual presents its water-resistance chart as a guide and associates 15 ATM with swimming, snorkeling and water sports, while noting that actual resistance may vary with water temperature, salinity and underwater use. This is not a guarantee for every activity or an independent dive-watch certification. Nor does a product-page rating establish the condition of an older or uninspected watch.
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Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →The manual warns that water resistance can be compromised over time or by adverse conditions, advises using the screw-down crown where fitted, and says: “Note that you should never wear your watch in a jacuzzi or steam room”. Steam can enter and cause condensation, according to the manual. Spinnaker Fleuss Automatic instruction manual
Fleuss 40: a different iteration, not a smaller SP-5055
Spinnaker UK lists the Teal Mirage SP-5133-CC as a separate Fleuss 40 iteration. Its smaller case comes with a different movement and a steel bracelet; do not carry SP-5055 strap compatibility or movement details over to it.
Rank #4
- SPINNAKER - OUR STORY: It is the sea and crafts that glide and dive into her waters that inspire so much of our design. The spirit of aquatic influence lies at the heart of each Spinnaker collection. Our timepieces, through a combination of material, design and craftsmanship, pay tribute to both a technical command and for a life beneath, beyond and beside the sea.
- FLEUSS AUTOMATICt:The Fleuss Automatic Severn collection draws inspiration from the legacy of Henry Albert Fleuss, a visionary who made significant advancements in diving technology. The collection's name, 'Severn,' is a nod to the Severn Tunnel construction project where Fleuss's apparatus was first used under operational conditions in November 1880.
- MOVEMENT: The Fleuss Automatic is powered by a Japanese TMI NH35 24 Jewels 3 hands date self-winding automatic movement
- THE FINER DETAILS: Featuring a 43mm stainless steel case, 22mm solid stainless steel bracelet, an extra genuine leather strap, anti reflection coated sapphire lens and water resistance of up to 15 ATM.
- WARRANTY: 2 years International Warranty
| Specification | SP-5055 Fleuss Automatic | Fleuss 40 SP-5133-CC |
|---|---|---|
| Case dimensions | 43 mm diameter, 13 mm thick, 51 mm lug-to-lug (Spinnaker US listing) | 40 mm diameter, 11 mm thick, 47 mm lug-to-lug (Spinnaker UK listing) |
| Movement | Miyota 8215 automatic, date, 21 jewels, 21,600 BPH, 42-hour reserve (Spinnaker US listing) | Miyota 9039 automatic, 24 jewels, 28,800 BPH, 41+ hours reserve (Spinnaker UK listing) |
| Band | 22 mm band; listed variants use leather straps (Spinnaker US listings) | 20 mm stainless-steel bracelet (Spinnaker UK listing) |
| Water resistance | 15 ATM (Spinnaker US listing) | 15 ATM (Spinnaker UK listing) |
For the Fleuss 40’s specifications, see Spinnaker UK’s Teal Mirage SP-5133-CC listing. The 20 mm bracelet is not evidence that a particular aftermarket strap will fit; confirm the exact reference and fit before purchasing an accessory.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Price and availability depend on colorway
Spinnaker’s listings showed different prices and stock states when accessed October 7, 2026: Prussian Blue SP-5055-08 displayed $305 USD and was sold out, while Lumber Black SP-5055-01 displayed $209 USD with $305 struck through and an Add to Cart control. The Fleuss 40 Teal Mirage SP-5133-CC listing showed £453 and was sold out. These are snapshots of specific listings, not stable prices or a promise of current availability. Prussian Blue listing · Lumber Black listing · Fleuss 40 listing
Quick Recap
Best Value
- Premium Craftsmanship – This rugged dive watch features a robust 44mm 316L stainless steel octagonal case, offering a distinctive and durable design. The sapphire lens with anti-reflective coating ensures clarity and scratch resistance, making it suitable for both adventure and daily wear.
- Precision Engineering – Powered by the reliable Seiko NH35 automatic movement, this timepiece delivers dependable performance with smooth sweep functionality and a quick-set date. Designed for everyday precision, it’s a robust companion for the modern watch enthusiast.
- Ready for Adventure – With a water resistance of up to 300 meters (30 ATM), this watch is built to withstand deep-sea explorations and rigorous activities. The screw-down crown and exhibition case back enhance its resilience and functionality under pressure.
- Comfortable Wear – The solid stainless steel bracelet, complemented by an additional matching rubber strap, offers versatility and comfort. The fold-over buckle with safety lock and push button ensures a secure fit for any occasion.
- Inspired by the Depths – Paying homage to pioneering diver Frédéric Dumas, this timepiece combines vintage diving aesthetics with modern functionality. Spinnaker's dedication to maritime heritage is evident in the Dumas GMT, making it an ideal companion for those drawn to the sea's allure.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
