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Blancpain brings back the vintage spirit of the Bathyscaphe with a 70th anniversary limited edition

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Born from the golden age of recreational diving, the Bathyscaphe embodies the typical skin diver codes through its balance of elegance and everyday wearability. Created in 1956 as the civilian counterpart to the Fifty Fathoms, the model bore a name that had already been registered in 1953 by Blancpain’s then-CEO and passionate diver, Jean-Jacques Fiechter, reflecting his early vision of creating a diving watch designed not only for professional use but also for enthusiasts. Seventy years after its creation, Blancpain celebrates this legacy with a reproduction of a landmark model from 1968. A timepiece that bridges the aesthetic design of the past with watchmaking excellence, this 300-piece limited edition pays tribute to a defining chapter in the evolution of the diver’s watch.

The Skin Diver Style: A New Relationship with the Underwater World

During the 1950s and 1960s,a new generation of watches emerged alongside the growing popularity of recreational diving: the skin diver. More than purely technical instruments, these watches reflected a new relationship with the underwater world, one shaped by leisure, enjoyment, and a growing fascination with this emerging lifestyle. They captured the spirit of a time when diving became not only a professional activity, but also a source of personal adventure. Characterized by more compact proportions, clean lines, and a refined aesthetic, skin diver watches combined essential diving features with a more understated and daily- wear design.

Emerging from that philosophy, the Bathyscaphe was created in 1956 – despite the name having already been registered in 1953 – by Jean-Jacques Fiechter, then CEO of Blancpain and creator of the Fifty Fathoms, bringing Blancpain’s pioneering diving expertise into
a civilian expression designed for everyday wear.

The Bathyscaphe: The Diver Legacy

The name “Bathyscaphe” refers to the pioneering deep-sea exploration vessel conceived by Swiss scientist Auguste Piccard in the 1940s. Designed to reach the greatest depths of the ocean, the Bathyscaphe represented a major milestone in humanity’s exploration of the underwater world, an achievement that resonated with Jean-Jacques Fiechter’s own passion for diving and exploration.

While the Fifty Fathoms, introduced in 1953, was developed as a professional diving instrument for military forces, professional divers, and underwater specialists, the Bathyscaphe offered an everyday interpretation of the same heritage yet preserving the essential features of the diver’s watch. The distinction between the two models was particularly evident through their proportions. Measuring slightly over 41 mm in diameter, the original Fifty Fathoms was created to be a robust professional instrument. With a more compact 35 mm case, the first Bathyscaphe adopted a slimmer profile, reflecting a more civilian style while maintaining the reliability expected from a true diver’s watch. Over seven decades, the Bathyscaphe has evolved through various interpretations but has always remained faithful to its original identity.

The Spirit of 1968, Reborn

For the model’s 70th anniversary, Blancpain turns to one of the most emblematic expressions of the Bathyscaphe’s history with a watch from 1968. This timepiece was selected for the way it embodied the collection’s defining qualities: balanced proportions, functionality, and understated elegance. Fifty Fathoms Bathyscaphe, 1968

Staying as close as possible to this iteration, Blancpain translated the anniversary piece through contem- porary watchmaking standards. The new edition retains the original 37.40 mm diameter and stainless- steel construction, but its case was specifically developed around the movement to achieve the desired proportions and ergonomics. The remarkable diameter-to-thickness ratio, defined by a slender case middle, contributes to the watch’s harmonious profile on the wrist. The polished finishing, curved surfaces, and carefully shaped lugs enhance its refined aesthetics.

The bezel continues this dialogue between heritage and innovation. Made of steel with a ceramic insert and lacquered numerals – replacing the original black hesalite material – it reinforce durability and legibility.

Every element has been considered to reinforce the aesthetic codes of the original design, from the mid-20th century Blancpain logo to the baton hands and indexes enhanced by vintage-coloured Super-LumiNova®, which recalls the warm tones of the luminous materials used in the past. The hand- stitched chocolate calf leather strap further drives this heritage-inspired spirit, developing a natural patina over time.

The result is a faithful contemporary Bathyscaphe reproduction carrying the unmistakable character of its 1968 inspiration.

Vintage Soul, Contemporary Performance

Beneath its vintage-inspired exterior, this anniversary edition reveals the expertise of Blancpain’s contemporary watchmaking. The Manufacture calibre 1150 was selected to equip this timepiece, offering a combination of reliability, precision, and exceptional autonomy with a 100-hour power reserve.

Its silicon hairspring provides antimagnetic properties, contributing to the movement’s stability and long- term performance.

Visible through the sapphire crystal case back, the movement showcases the meticulous Haute Horlogerie finishing. Inspired by the design of that of the original Fifty Fathoms, its open worked 18K gold oscillating weight highlights the beauty of the mechanical architecture. Unlike the 1968 inspiration piece, which featured a closed case back, this new interpretation allows the movement to become part of the experience of ownership, emphasizing the daily- wear DNA of the piece. This choice reflects Blancpain’s desire to offer not only a connection to the past, but also a direct appreciation of the watchmaking expertise behind the timepiece.

Faithful to the standards of the Fifty Fathoms collection, the Bathyscaphe remains water-resistant to 30 bar. Limited to 300 individually numbered pieces, each delivered in a PeliTM case, this anniversary edition celebrates a 70-year-old legacy by combining contemporary reliability with the enduring character of a historic model. ©Tim Vaux Photography

TECHNICAL SPECIFICATIONS Fifty Fathoms Bathyscaphe
Ref. 5903 1110 63A

Movement: Blancpain Manufacture Calibre 1150
Functions: Hours, minutes, seconds, date
Winding: Automatic
Power reserve: 100 hours (~4 days)
Dimensions: 26.20 × 3.25 mm
Frequency: 3 Hz (21,600 vph)
Hairspring: Silicon
Jewels: 28
Components: 210
Case: Stainless steel
Glass & back: Sapphire crystal
Water resistance: 30 bar (300 metres)
Diameter: 37.40 mm
Thickness: 12.30 mm
Lug-to-lug: 46.50 mm
Lug width: 18 mm
Dial: Sunburst meteor grey
Hands: Baton shape, with vintage-colour
Super-LumiNova®
Indexes: Baton shape, 18K white gold with vintage-colour Super-LumiNova®
Strap: Chocolate calf leather
Clasp: Pin buckle
Limited Edition: 300 pieces
Warranty: 5 years

Hublot Big Bang Sapphire Sky Blue: A New Shade of Innovation in Sapphire Watchmaking

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Hublot continues to redefine transparent watchmaking with the launch of the limited-edition Big Bang Sapphire Sky Blue, pairing its signature sapphire expertise with the impressive Meca-10 manufacture movement.

There are watches that tell time, and then there are watches that make a statement before you even glance at the dial. The Hublot Big Bang Sapphire Sky Blue belongs firmly in the latter category. Limited to just 100 pieces worldwide, this latest creation showcases everything Hublot has become synonymous with over the past decade: innovative materials, bold engineering and contemporary design.

Hublot’s Mastery of Sapphire Continues

Working with sapphire is no simple feat. Renowned for its exceptional hardness and transparency, sapphire is one of the most demanding materials in watchmaking. While many brands have experimented with it, Hublot has consistently expanded its possibilities, introducing coloured sapphire cases that combine technical complexity with striking aesthetics.

The Big Bang Sapphire Sky Blue captures the calm brilliance of a summer sky through its fully polished 44mm sapphire crystal case. Its transparent construction allows light to flow through every angle of the watch, giving it a presence that constantly changes depending on its surroundings. Titanium H-shaped screws secure the sapphire bezel, while a structured sky-blue rubber strap completes the distinctive monochromatic look.

The Meca-10 Movement Takes Centre Stage

Inside the transparent case is one of Hublot’s most celebrated in-house calibres: the HUB1201 Meca-10.

Originally introduced in 2016, the Meca-10 broke away from conventional movement architecture. Rather than hiding the mechanics beneath the dial, Hublot designed the movement to become the visual centrepiece of the watch. Inspired by mechanical construction systems, its fully skeletonised architecture reveals every functional component.

The manually wound movement consists of 223 components, delivers an exceptional 10-day (240-hour) power reserve, and uses two parallel mainspring barrels to maintain consistent energy delivery. One of its most distinctive features is the innovative rack-and-pinion power reserve display that moves horizontally across the movement, reinforcing the industrial aesthetic that has become synonymous with the Meca-10 collection.

Transparency That Reveals Every Detail

The appeal of the Big Bang Sapphire Sky Blue extends beyond its sapphire case. Its matte sky-blue skeleton dial, matching movement bridges and sapphire case-back ensure that the watch remains visually captivating from every angle.

Instead of concealing its mechanics, the watch celebrates them. Every gear, bridge and wheel becomes part of the overall design, creating a fascinating interplay between engineering and aesthetics. It is a reminder that modern haute horlogerie is as much about visual storytelling as it is about precision.

Built with Confidence

The Big Bang Sapphire Sky Blue is more than an exercise in design. It also reflects Hublot’s confidence in its manufacturing capabilities.

Eligible models purchased from 1 January 2026 benefit from Hublot’s 5+5 warranty programme, providing a five-year standard warranty with the possibility of extending coverage to ten years through the Hublotista programme. It is among the most comprehensive warranty offerings in contemporary luxury watchmaking and reinforces the brand’s trust in its products.

Limited to Just 100 Pieces

Exclusivity remains central to the appeal of this release.

The Hublot Big Bang Sapphire Sky Blue is limited to 100 pieces worldwide and will be available through selected Hublot boutiques, authorised retailers and the brand’s official online store. The watch is priced at USD 84,300, reflecting both the complexity of its sapphire construction and the sophistication of its in-house movement.

Final Thoughts

Few brands have embraced sapphire as confidently as Hublot. Over the years, the manufacture has transformed what was once considered an experimental material into one of its defining signatures. The Big Bang Sapphire Sky Blue continues that journey, combining a transparent sky-blue sapphire case with the technically impressive Meca-10 movement in a package that is both futuristic and unmistakably Hublot.

For collectors who appreciate avant-garde watchmaking, architectural movements and limited-edition craftsmanship, this latest Big Bang demonstrates exactly why Hublot remains one of the industry’s most daring innovators.