Not all images were able to load for printing. Please close the print window and try again. The Blancpain Fifty Fathoms Tech Date, a Truly Purposeful Three-Hour Dive Watch
Born from the extreme Tech Gombessa, Blancpain's latest technical dive watch is a little more versatile for use on dry land.
Dive watches are, by nature, rather conservative instruments. Since the 1950s, the basics have barely changed: a robust water-resistant case, luminous hands and markers, and a rotating bezel, often undirectional, graduated over 60 minutes. Blancpain played a big part in setting up these design codes with the Fifty Fathoms during the 1950s. Seventy years later, however, the brand decided that modern diving had evolved enough to require a different kind of mechanical instrument.
That instrument surfaced as the Fifty Fathoms Tech Gombessa, introduced in 2023. Created with a very specific purpose in mind – closed-circuit rebreather diving – the Tech Gombessa replaced the traditional 60-minute timing scale with a patented three-hour system; Blancpain CEO Marc A. Hayek, also a certified professional diver, filed the patent jointly with underwater photographer and biologist Laurent Ballesta, whose Gombessa Expeditions are funded by Blancpain Ocean Commitment and focus on studying rare marine creatures and phenomena. Recently, Blancpain took the highly specialised Fifty Fathoms Tech Gombessa concept and made it slightly more approachable with the new Fifty Fathoms Tech Ref. 5019A.
The Titanium Case
The tech specs haven’t changed much, nor has the watch’s sheer presence. At 47mm in diameter and 14.81mm thick, the Fifty Fathoms Tech is massive on paper. On the wrist, things are a little different. The Grade 23 titanium construction removes much of the expected weight, and the unusual central lug design allows the rubber strap to drop almost immediately around the wrist.
For any large timepiece, it is customary to say it wears like and then scrub a few mm off. Does the Fifty Fathoms Tech wear like a smaller watch? Of course not. It remains a very large, purpose-built diving instrument that will be better over a diving suit than on the naked wrist. Yet it is manageable, and the titanium case feels considerably less problematic than the dimensions suggest. The broad, satin-finished surfaces also suit the technical character. The helium escape valve, the screw-down crown and 300m of water resistance leave little doubt about its real intentions.
The Very Legible Dial
The black dial differs from a conventional Fifty Fathoms. Blancpain calls the finish Absolute Black, a surface that absorbs up to 97% of incoming light, and is also found on the slightly more approachable Fifty Fathoms Tech 45. In practice, it creates an almost reflection-free background, making the hands, the large block-shaped applied hour markers, and the bold numerals at cardinal positions appear to float above the dial. It is less about visual effect than contrast, although the result is certainly striking.
Legibility is also organised through two colours of luminescence. Standard timekeeping indications glow green, while the dedicated diving indications emit blue. It makes sense immediately in darkness: one colour tells the time, the other tracks the dive. The new version also adds a date window. Many might prefer the cleaner Gombessa dial, but the date is understandable here, since Blancpain is positioning this permanent-collection Tech as a versatile daily watch rather than an expedition-specific instrument, and the added practicality is welcome. The 2025 conventional-dive-bezel Fifty Fathoms Tech 45 also included date functionality, so there’s continuity of thought, and, as the brand notes, Fifty Fathoms models are not professional diving instruments (and must be backed up where necessary by a professional diving computer).
The Three-Hour Bezel
The three-hour diving system is the x-factor. Traditional dive watches measure elapsed time over 60 minutes because the available air supply generally limits the duration of conventional open-circuit scuba dives – and also because those bezels work jointly with the minute hand, which rotates around the dial in 60 minutes. Closed-circuit rebreathers change the equation. By recycling exhaled gas, removing carbon dioxide and replenishing oxygen, these systems can allow divers to remain underwater for several hours. Who would want to do that? Underwater photographers and scientists, who also see this extended bottom time as an advantage. Rebreathers produce virtually no bubbles and far less noise. Given enough time, marine life can get used to divers and resume more natural behaviour. To those who don’t dive, it’s comforting to know the amplified capabilities, if only to brag.
The three-hour bezel is wonderfully straightforward to use, even if the mechanics behind it are more complex. Blancpain adapted the principle of a GMT mechanism, but instead of a hand completing one rotation every 24 hours, the dedicated dive-time orange-painted hand circles the dial once every three hours. Align the luminous rhomboid marker on the unidirectional bezel with this hand at the beginning of a dive, and elapsed time can be read against the three-hour scale.
What we like is that the system doesn’t require learning an entirely new way of timing a dive. It works exactly like a conventional diving bezel, only over a much longer period. The large bezel is easy to grip, its action is firm and precise, and the blue-emission diving indications are immediately distinguishable from the standard time display.
The Powerful Movement
The watch is powered by the manufacture calibre 13P5A, derived from Blancpain’s familiar calibre 1315 and adapted for the three-hour indication and date. The automatic movement measures 33.4mm by 5.65mm, comprises 226 components, and operates at 28,800 vibrations/hour. Three barrels provide an impressive 120-hour, or five-day, power reserve. The movement is visible through the sapphire caseback, an almost luxurious touch on such a robust technical watch.
The interchangeable Strap System
The new strap system, taken from the Fifty Fathoms Tech 45, is one of the practical features. The central attachment incorporates a tool-free interchangeable construction, allowing the rubber strap to be removed quickly. The watch comes with a bright orange strap; black and white straps are available separately. Orange isn’t exactly discreet, which is the point, and with the black dial and dark titanium case, it works remarkably well. As mentioned, the soft rubber and central lug design make the watch genuinely comfortable despite its dimensions.
Thoughts and Price
Most owners will never spend three hours underwater on a closed-circuit rebreather, and fewer still will use it while documenting marine ecosystems. Still, the watch has enormous appeal for some of us, desk divers with large wrists. Compared with the original Tech Gombessa, the Fifty Fathoms Tech Ref. 5019A feels like a piece you could realistically wear between dives, or no dives but pool dives. The date, the more traditional colours on the dial, the interchangeable straps and bold orange colour add some everyday-adventure character without diluting the initial concept. It remains huge, highly specialised and technical, and with it, Blancpain actually tries to move the diving watch tech forward, like it once did with the all-mighty Fifty Fathoms X Fathoms.
The Blancpain Fifty Fathoms Tech Ref. 5019A is priced at CHF 20,500, EUR 24,150 or USD 27,200. For more details, please visit www.blancpain.com.
