In a world of shrinking watches, a 47mm timepiece stands out. You could call a watch of this size countercultural, but for the new Blancpain Fifty Fathoms Tech, that’s incorrect. The new Fifty Fathoms Tech is a new version of the 2023 Tech Gombessa, and it’s a proper dive instrument. This aquatic monster is all about readability underwater, so form follows function. A 47mm case is just right, and so is the three-hour bezel, a complication that helps divers remain underwater for hours.

Before we dive in, let’s ensure we have everything clear and checked. The new Fifty Fathoms Tech (5019A 12B30 94A) is another version of the first Fifty Fathoms in the Tech line Blancpain introduced in 2023, the impressive 47mm Tech Gombessa (5019 12B30 64A). Also carrying the Tech moniker is the 45mm Fifty Fathoms Tech (5029 12B30 94A), which is derived from the Fifty Fathoms Tech Ocean Commitment IV limited edition (5029A 12B30 64A), a 100-piece LE that surfaced in March of last year. What all four models have in common is a generous case size and a contemporary take on the classic, if not iconic, Fifty Fathoms design.

Blancpain Fifty Fathoms Tech Gombessa reference 5019 12B30 64ARVB

Fifty Fathoms Tech Gombessa ref. 5019 12B30 64ARVB

Blancpain introduces its fourth high-end dive instrument, the 47mm Fifty Fathoms Tech

Two things immediately set the new Fifty Fathoms Tech apart from the Tech Gombessa: out are the faux patina-like dark brownish orange indications, and in is a date window between 4 and 5 o’clock. The dial’s clearer, more straightforward look, which doesn’t aim to be trendy, makes sense for a fresh, modern dive watch. What remains are the functional fundamentals. The watch’s standout three-hour bezel and dedicated three-hour hand are its most distinctive features. The world’s first three-hour dive ring was created to facilitate divers diving with closed-circuit rebreathers (CCR). These divers sometimes stay underwater for two, three, or more hours. And when they do, a 60-minute bezel is simply insufficient.

Blancpain cleverly adapted the GMT complication, traditionally shown via a slow-turning 24-hour hand, to operate on a three-hour cycle instead. The result is a dedicated three-hour hand with a corresponding scale on the bezel, giving technical divers, underwater photographers, and scientists the precision they need during their long dives.

Blancpain Fifty Fathoms Tech under water

Blacker than black

Like the Tech Bombessa, the new Fifty Fathoms Tech has a Grade 23 titanium case featuring a helium valve and a 300m depth rating. Inside this safe environment beats the Blancpain in-house caliber 13P5A, which uses the proven automatic caliber 1315 as a base and has a 120-hour power reserve. The indications might be new, but the background is still the “absolute black” dial that absorbs up to 97% of light. This blacker-than-black dial makes the bright, purely functional indications stand out more clearly than on the Tech Gombessa. Blue-glowing Super-LumiNova illuminates all diving indications, while green-glowing Super-LumiNova helps the diver read the regular time in any light, at any depth, eliminating confusion.

Another update is that the watch with central lugs now features an interchangeable strap system, enabling tool-free strap changes. The watch comes on an orange rubber strap, with black or white rubber available separately. Underlining the watch’s functionality, it comes in a Blancpain-branded classic Peli case.

Blancpain Fifty Fathoms Tech ref. 5019A 12B30 94A underwater in the dark

Commitment underwater

Blancpain does more than simply produce dive watches; it also actually cares for the environments that divers enter. The name Blancpain Ocean Commitment was first used in 2014, but the commitment predates it by more than a decade. The approach has always been the same: Blancpain does not simply donate money; instead, it identifies promising projects, activates its networks, and builds long-term partnerships that generate scientific and ecological outcomes.

diver holding "Adopt the Blue" flag underwater

For instance, Blancpain has a long-standing partnership with PADI through the launch of the Global Shark & Ray Census. This is a worldwide citizen-science initiative mobilizing divers to monitor vulnerable shark and ray species. Another example is the Tamataroa project, a joint initiative by the Mokarran Protection Society and Gombessa Expeditions, to advance knowledge of and protection for the great hammerhead shark.

hammerhead shark

Image: Laurent Ballesta

Since we’ve reached the end of the article, it might be a good idea to watch a film that documents this important ocean conservation project. But don’t do that before I tell you that the new 47mm Blancpain Fifty Fathoms Tech costs €24,350 / US$27,200 / CHF 20,500. And by the way, do you, like me, expect this watch to pop up in Nacho’s upcoming list of the best summer watches?

Watch specifications

Brand
Model
Fifty Fathoms Tech
Reference
5019A 12B30 94A
Dial
Absolute black with applied Super-LumiNova numerals and baton indexes, date window
Case Material
Grade 23 titanium, black ceramic bezel insert with blue-glowing Super-LumiNova markings
Case Dimensions
47mm (diameter) × 14.81mm (thickness)
Crystal
Domed sapphire
Case Back
Exhibition case back with sapphire crystal
Movement
Blancpain 13P5A: automatic with manual winding and hacking seconds, 28,800vph (4Hz) frequency, 120-hour power reserve, 35 jewels, adjusted to six positions
Water Resistance
300 meters (30 bar)
Strap
Orange rubber with toolless exchange system and Grade 23 titanium pin buckle
Functions
Time (hours, minutes, seconds), dive timer (three-hour hand, 180-minute unidirectional rotating bezel), date
Price
€24,350 / US$27,200 / CHF 20,500