Blancpain’s Fifty Fathoms Tech BOC IV: A Limited-Edition Watch with a Mission
Luxury Swiss watchmaker Blancpain continues its legacy of ocean preservation with the launch of the new Fifty Fathoms Tech BOC IV. Limited to just 100 pieces, this exceptional timepiece is the latest addition to the renowned Fifty Fathoms collection, combining cutting-edge watchmaking with a commitment to marine conservation. Proceeds from sales will support the newly established Blancpain x Sulubaaï Marine Research Center, an extension of the Sea Academy project, furthering the brand’s long-standing dedication to protecting our oceans.

A Legacy of Oceanic Advocacy
Since debuting the Fifty Fathoms in 1953—widely regarded as the first professional diver’s watch—Blancpain has been a steadfast champion of ocean exploration and conservation. The Blancpain Ocean Commitment (BOC) initiative represents over two decades of dedicated efforts to safeguard marine environments through research, education, and strategic partnerships. The Fifty Fathoms Tech BOC IV serves as both a testament to this mission and a sophisticated, high-performance diving watch.

Unparalleled Design and Performance
Building on the foundation of the Fifty Fathoms 70th Anniversary Act 2 Tech Gombessa, the Fifty Fathoms Tech BOC IV features a striking 45mm Grade 23 titanium case, ensuring both strength and lightweight wearability. With a 14.1mm thickness, it balances durability with a sleek, ergonomic profile, making it ideal for both professional divers and watch enthusiasts alike.

Exceptional Features for Divers
- Saturation Diving Capabilities: A helium valve enables use in hyperbaric conditions.
- High-Visibility Bezel: The unidirectional rotating bezel, equipped with a domed black ceramic insert, allows for easy handling even with gloves.
- Absolute Black Dial: Absorbing 97% of light, the dial ensures optimal underwater readability with luminescent block-shaped appliques.
- Integrated Rubber Strap: Central lugs attached from the inside enhance comfort and modern aesthetics.
Powering this extraordinary timepiece is the calibre 1315A automatic movement, boasting a five-day power reserve. The inclusion of an anti-magnetic silicon balance spring ensures superior chronometric precision. Adding a touch of exclusivity, the 18 ct gold oscillating weight, adorned with the BOC blue logo, is visible through the sapphire case back.

A Watch That Funds Marine Conservation
Beyond its technical excellence, the Fifty Fathoms Tech BOC IV serves a greater purpose. For every watch sold, 1,000 euros will be allocated to the Blancpain x Sulubaaï Marine Research Center, amounting to a total contribution of 100,000 euros. This funding supports marine conservation efforts in Shark Fin Bay, Palawan, Philippines, where Blancpain has played a pivotal role in establishing five marine protected areas (MPAs) in collaboration with local communities.
Inaugurated on February 7, 2025, the Blancpain x Sulubaaï Marine Research Center is the latest evolution of the Sea Academy programme, an initiative focused on marine resource management, habitat restoration, education, and sustainability. Since 2023, Blancpain has spearheaded efforts to build this research hub in Sandoval, strategically located near critical marine ecosystems.

More Than a Timepiece: A Conservation Symbol
Each of the 100 watches comes packaged in a Pelicase™ box, alongside a donation certificate and an exclusive numbered photograph by award-winning marine photographer Laurent Ballesta. His captivating image features a horseshoe crab, a species that has remained unchanged for 150 million years but now faces extinction. The protected waters of the Sea Academy programme offer a sanctuary for these ancient creatures.
Owners of the Fifty Fathoms Tech BOC IV gain more than a luxury watch; they become part of a movement. Each purchaser is welcomed into the Blancpain Ocean Commitment Circle, a global network of ocean conservation advocates dedicated to making a tangible impact.
A Statement of Excellence and Responsibility
With its groundbreaking technology, refined design, and unwavering commitment to marine preservation, the Fifty Fathoms Tech BOC IV is more than just an elite diving watch. It represents a bold statement in support of the oceans. Whether worn by a professional diver, a horology aficionado, or an environmental advocate, this limited-edition masterpiece is a reminder that true luxury is defined not only by craftsmanship but by its contribution to a better world.
