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A throwback to how Blancpain’s 2025 Fifty Fathoms models are built for the modern wrist

From revisiting the original reference to watches for women to technically advanced versions, Fifty Fathoms presented quite a range this year
In 1953, Blancpain unveiled the Fifty Fathoms, the world’s first modern diving watch. Purpose-built for professional divers, it was embraced by underwater pioneers and elite naval forces around the globe. Engineered to endure the harshest environments, it featured a secure crown system, high-contrast luminescent dial for optimal legibility, lockable rotating bezel, anti-magnetic protection, water resistance up to 50 fathoms (300 feet or 91.44 meters), and an automatic movement. Through the decades, the line has continued to evolve, to a point today where the Fifty Fathoms line is a watch that supports deep-sea exploration, refined through innovation and modern craftsmanship. And 2025 was a testament to just how the brand is building the line for the modern wrist. Here’s a look back at the models released.   

Commitment to preservation 

Blancpain Ocean Commitment 

With over 20 years dedicated to ocean preservation, this year Blancpain unveiled a new limited edition watch that highlights its support for ocean exploration and protection — Blancpain Ocean Commitment (BOC). The funds raised through its sale would be allocated to the newly established Blancpain x Sulubaaï Marine Research Center in Palawan, Philippines, an extension of the Sea Academy project, a flagship initiative of the brand. Limited to just 100 pieces, the new Blancpain Fifty Fathoms Tech BOC IV draws inspiration from the 47 mm 70th Anniversary Act 2 Tech Gombessa launched in 2023. Measuring 45 mm and crafted from grade 23 titanium, the case integrates a helium escape valve for saturation diving in hyperbaric conditions. Its unidirectional bezel, featuring a domed black ceramic insert angled toward the dial, ensures effortless handling even with diving gloves. The “absolute black” dial, capable of absorbing up to 97% of light, offers superior legibility underwater, enhanced by bold luminescent block-shaped hour markers. Completing the design, the integrated black rubber strap with internally mounted central lugs offers comfort. It is powered by Blancpain’s Calibre 1315A, offering a five-day power reserve. Through the sapphire crystal caseback, the 18-karat gold oscillating weight is engraved with the blue BOC logo. 

A wearable steel in the permanent collection

Fifty Fathoms Automatique Ref. 5010 1130 

After releasing a brushed grade 23 titanium and red gold version last year in a 42mm size, this year, the brand introduced Fifty Fathoms Automatique Ref. 5010 1130 in steel, in 42 mm, in its permanent collection. For a long time this size has existed either in the Bathyscaphe line or as limited editions, but this year, the brand rectified this with a model that pays tribute to the original Fifty Fathoms of 1953. Featuring a sunburst black dial topped with XXL luminescent indexes, the watch features a unidirectional black bezel and a domed sapphire crystal for a glossy aesthetic. Powered by Caliber 1315, launched first in 2007, the movement features three series-coupled barrels and offers a 5-day power reserve equipped with a silicon balance spring. Visible through the sapphire case back is 18-Karat red gold oscillating weight featuring NAC treatment, reprising the characteristic design of the rotor of the 1953 model. It can be paired with a NATO strap, sailcloth strap, Tropic-style rubber strap, or a case-matching steel bracelet.

Fifty Fathoms for her
Fifty Fathoms Ref. 5007 12B44R NAFA 

The iconic Fifty Fathoms line debuted for women with two new Automatique models — one in a playful pink (Ref. 5007 12B44R NAFA) and the other in a bold black (Ref. 5007 3644A B52B). While their design language pays homage to historic watches, the diameter was refined to a versatile 38.2 mm. Featuring the signature unidirectional rotating sapphire bezel with a ceramic insert, the pink edition is crafted in lightweight titanium, while the black edition is rendered in 18-karat rose gold. Both feature white mother-of-pearl dials with softly graded tones complemented by Arabic numerals at 12, 3, 6, and 9 o’clock, and matching hands and hour markers filled with Super-LumiNova in pink or vintage green. The dial remains clean and balanced, free of a date display, powered by the automatic Calibre 1153 with a 100-hour power reserve. The pink titanium model is available with either a titanium bracelet or a white fabric strap accented by two-tone pink stripes, while the black rose gold version is paired with your choice of a black tropic rubber, sailcloth, or NATO fabric strap. 

Something for everyone 

Fifty Fathoms Automatique Ref. 5007 36B40 O64B 

Following the steel and women’s models, the brand expanded the 38 mm Fifty Fathoms Automatique models with five distinct versions: A polished stainless steel case with a black dial and black bezel, embodying the spirit of the original 1953 Fifty Fathoms; a satin-brushed grade 23 titanium case paired with a blue dial and bezel; a satin-brushed 18-karat red gold case with a blue dial and bezel, presenting a rich, warm aesthetic. Each model features classic elements of the line, and are offered with a wide choice of straps — including tropic rubber, sail-canvas, and NATO options — as well as titanium or stainless steel bracelets featuring a mix of satin-brushed and polished surfaces. At the heart of the new 38 mm models lies the Blancpain Manufacture Calibre 1150, delivering an impressive 100-hour power reserve.  

Pop of colour 

Fifty Fathoms Tech Ref. 5029 12B30 94A 

The Fifty Fathoms Tech line got a stylish upgrade this year with the launch of Fifty Fathoms Tech Ref. 5029 12B30 94A, with three rubber straps.  The watches now come with a fully interchangeable strap system requiring no tools – a first for the Fifty Fathoms line, and the watch’s highlight. The strap length also caters to both divers wearing wetsuits and enthusiasts wearing the watch on the wrist everyday. The straps are mounted on a discreet central lug, giving the illusion of a lug free case. The new strap colours are black, crisp white, and a bright orange in keeping with both the central seconds hand and the ‘TECH’ logo on the dial. FIttingly housed in grade 23 brushed titanium, a high-spec material that’s prized for its biocompatibility and exceptional strength-to-weight ratio, the case measures 45 mm, with a helium escape valve for saturation diving and a 120-click unidirectional ceramic bezel, specifically engineered for enhanced grip and legibility underwater even with gloved hands. The model offers 300 metres of water resistance. Powering t is the Calibre 1315A automatic movement, beating at 4 Hz, offering a 120-hour power reserve, visible through a sapphire crystal caseback. The watch is now a part of the permanent collection. 

Images: Courtesy Brand 

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