Ad
Ad
Ad
Ad
Ad
Ad
Reading time 4 min.

Tech-Driven Conservation: Meet the New Fifty Fathoms Tech from Blancpain (With Live Photos and Video)

Blancpain_Fifty_Fathoms_Tech_BOC_IV_Press_Featured_2025
© PR

Continuing over 20 years of dedication to ocean preservation, Blancpain has unveiled its fourth limited edition Blancpain Ocean Commitment (BOC) dive watch:

This series of 100 pieces (Ref. 5029A 12B30 64A) expands the Fifty Fathoms Tech line with a smaller, 45-mm format. The funds raised will be allocated to the newly established Blancpain x Sulubaaï Marine Research Center, an extension of the Sea Academy project (see here). For each watch sold, 1,000 euros will be allocated to the Blancpain x Sulubaaï Marine Research Center, contributing to a total fund of 100,000 euros.

The new Fifty Fathoms Tech BOC IV adopts the design of the Fifty Fathoms 70th Anniversary Act 2 Tech Gombessa from 2023. With a slightly smaller diameter of 45 mm and a standard dive bezel, however, the BOC IV can easily be worn without a closed circuit rebreather (still, the Grade 23 titanium case comes with a manual helium release valve at 10 o'clock, which qualifies it for saturation dives). The unidirectional bezel with domed black ceramic insert is angled towards the dial. Absorbing up to 97% of light, the absolute black dial ensures optimal readability underwater, not to mention the hour-markers formed by luminescent block-shaped appliques. The integrated black rubber strap, combined with the central lugs attached from inside the case, provides not only exceptional ergonomics, but also represents a more contemporary interpretation of the Fifty Fathoms.

Blancpain_Fifty_Fathoms_Tech_BOC_IV_Hands_On_Valve_2025
© rruegger

At the heart of the Fifty Fathoms Tech BOC IV beats the 1315A, Blancpain's in-house automatic movement with a five-day power reserve (which debuted with the current 45-mm Fifty Fathoms in 2007). It is equipped with an anti-magnetic silicon balance for chronometric performance and precision. The 18 ct gold oscillating weight, adorned with the blue BOC logo, is visible through the sapphire case back:

Blancpain_Fifty_Fathoms_Tech_BOC_IV_Press_Caseback_2025
© PR

Blancpain x Sulubaaï Marine Research Center

Inaugurated in February this year, the Blancpain x Sulubaaï Marine Research Center is an extension of the Sea Academy program. Since 2020, Blancpain has supported this program by the Sulubaaï Environmental Foundation, a collaborative initiative aimed at the sustainable management of marine resources. The program focuses on creating a network of marine protected areas (MPAs) in partnership with local communities around Pangatalan Island and in Shark Fin Bay, Palawan, Philippines. The key principles of the Sea Academy are protection, restoration, education, and replication. Since 2023, Blancpain has funded the construction of the Blancpain x Sulubaaï Marine Research Center in the village of Sandoval. This centre, strategically located near the main research areas and the five MPAs established in Shark Fin Bay with Blancpain's support, aims to enhance the study, restoration, and protection of these marine ecosystems. The operations and activities of the Blancpain x Sulubaaï Marine Research Center will be supported by the sales of the limited edition BOC IV.

The funds raised will be allocated to the newly established Blancpain x Sulubaaï Marine Research Center, an extension of the Sea Academy project, a flagship initiative of the brand's commitment to the ocean.

Blancpain

Each of the 100 watches comes with Blancpain's typical Pelicase box, a donation certificate, and a special edition photograph in a series of 100 prints, numbered to match the watch's serial number. Signed by Laurent Ballesta, the image is part of his award-winning series from the 2023 Wildlife Photographer of the Year grand prize. It depicts a horseshoe crab in its natural habitat around Pangatalan Island in Shark Fin Bay. This prehistoric animal, whose morphology has remained virtually unchanged for 150 million years, is now threatened with extinction. The marine protected areas created by the Sea Academy programme offer it a safe haven.

The new Fifty Fathoms Tech BOC IV is priced at CHF 19,600.

Blancpain_Fifty_Fathoms_Tech_BOC_IV_Hands_On_Wrist_Underwater_2025
© rruegger

Want to know more about the BOC IV and the projects it supports? WatchTime already got to test the new the Fifty Fathoms Tech BOC IV extensively underwater, which means readers can expect an in-depth feature in the upcoming May-June print issue of WatchTime.

In the meantime: here's more about Blancpain Ocean Commitment / and here's more about the Sulubaaï Foundation

Specs

Modell:Fifty Fathoms Tech - Ocean Commitment IV
Ref. 5029A-12B30-64A
Dimensions:Height: 14.1 mm, Diameter: 45 mm
Movement:Cal. 1315A (Height: 5.65 mm, Diameter: 33.4 mm), 120 hours of power reserve, 35 jewels, 227 components
Case:Titanium (Grade 23), ceramic bezel insert, helium release valve at 10 o'clock
Limited to:100 pieces
Price:CHF 19,600
Archiv

Latest Articles

Independent Watchmaking at Its Most Inventive at WatchTime New York 2026 - Eight boundary-pushing creations headed to Gotham Hall
New creations from Artime, URWERK, Massena Lab, Parmigiani Fleurier, Ressence, Czapek, Sarpaneva, and Moritz Grossmann are headed to New York.
6 minutes
Chopard: L.U.C 1963 Heritage Chronograph in Prussian Blue - Prussian blue takes center stage
Chopard revisits the L.U.C 1963 Heritage Chronograph with a Prussian Blue dial, Lucent Steel case, and hand-wound flyback movement, limited to 25 pieces.
3 minutes
Alpina Debuts the Startimer Pilot Solarmetre and Two Route du Rhum Watches - Geneva Watch Days 2026
Alpina expands its Solarmetre lineup with a new 38mm pilot’s watch alongside two Route du Rhum limited editions inspired by offshore sailing.
4 minutes

You might also be interested in

First Look: 8 Watches to See at WatchTime New York 2026 - Eight standout releases headed to Gotham Hall this October
WatchTime New York returns this October with new releases from KUDOKE, Blancpain, L.Leroy, Oris, Arnold & Son, Glashütte Original, Citizen, and G-SHOCK.
5 minutes
Aug 26, 2026
To the Summit without Oxygen: A Spotlight on the Montblanc 1858 Geosphere 0 Oxygen
Montblanc is emphasizing the meaning of its brand name to a greater degree and creating innovative watches connected to alpinism. The company recently collaborated with extreme mountaineer Reinhold Messner to create a watch with no oxygen inside its case.
9 minutes
May 25, 2026
Blancpain Takes the Bathyscaphe back to 1968 for its 70th Anniversary - A vintage re-edition marking seven decades
For the legendary dive watch's anniversary, Blancpain revisits a landmark 1968 model with a vintage-inspired design and a 100-hour power reserve. Limited to 300 pieces, the new edition brings the beautifully raw historic character together with high-end contemporary watchmaking.
3 minutes
Aug 24, 2026
Ad
Ad
Ad
Ad
Ad