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With the Big Bang Original Unico Titanium Coal Blue 43 mm, Hublot introduces a subtle new shade to the Big Bang universe: a soft, slightly grayish coal blue, a first for the collection. Powered by the Unico HUB1280 manufacture caliber with flyback function, it retains all the power of the icon while offering a more soothing and contemporary look.
Big Bang Original Unico: the icon revisited
Launched in 2005, the Hublot Big Bang profoundly reshaped contemporary watchmaking through its architectural approach and bold use of materials. Layered construction, visible screws, integrated rubber, and deliberate contrasts quickly established a new aesthetic language. With the Big Bang Original Unico, Hublot returns to this founding architecture while evolving it toward fully realized maturity.
The Big Bang Original Unico Titanium Coal Blue 43 mm fits seamlessly into this continuity. A cornerstone model of the collection, it preserves the original Big Bang spirit while integrating the in-house Unico caliber, marking a rise in mechanical legitimacy without compromising identity.
Design & architecture: the Big Bang DNA intact
This Big Bang Original Unico incorporates all the emblematic visual codes of the collection. The multi-layer case asserts a powerful, instantly recognizable architecture, punctuated by the six visible, non-aligned screws on the bezel. The lateral “ears,” rectangular chronograph pushers, and rubber-clad crown emphasize the model’s sporty and technical vocation.
The dial features a checkerboard pattern inspired by carbon, a strong visual signature of the Big Bang Original Unico. The chronograph counters integrate naturally into the dial structure, while the discreetly positioned date at 4:30 preserves visual balance and legibility. A taut, functional aesthetic, faithful to the Big Bang spirit since its origins.
Proportions & ergonomics: the 43 mm format
With a diameter of 43 mm, this Big Bang Original Unico achieves an ideal balance between visual presence and wrist comfort. Positioned between the former 41 mm and 44 mm formats, this size offers a harmonious reading of the Big Bang architecture without excess.
The thickness of 13.2 mm is well controlled given the case’s multi-layer construction and the integration of a manufacture chronograph. The curves have been softened and the proportions refined to improve ergonomics, allowing the watch to sit naturally on the wrist. With water resistance to 100 meters, it retains genuine versatility of use.
In-house Unico HUB1280 movement
At the heart of this Big Bang Original Unico Titanium Coal Blue beats the in-house HUB1280 Unico caliber, developed and assembled within the Hublot manufacture in Nyon. This automatic chronograph movement is distinguished by its column wheel and flyback function, ensuring precise and fluid operation.
Operating at a frequency of 4 Hz (28,800 vibrations per hour), the Unico caliber offers a power reserve of approximately 72 hours, providing comfortable daily autonomy. It incorporates several patented innovations aimed at optimizing energy management and chronograph reliability. Visible through the sapphire caseback, the movement expresses a modern, high-performance mechanics perfectly integrated into the Big Bang architecture.
The Coal Blue color: a new Big Bang expression
With this Coal Blue version, Hublot introduces an unprecedented shade into the Big Bang universe. This charcoal blue, subtly greyed and deliberately softened, breaks away from the collection’s traditionally more assertive colors. It is neither a vivid blue nor a sporty blue, but a nuanced, almost pastel tone that brings a more elegant and contemporary interpretation of the model.
This chromatic choice creates a novel contrast with the rigor of the Big Bang architecture and the dial’s checkerboard motif. The strong case structure thus dialogues with the softness of the hue, offering a more serene interpretation of the icon without ever diluting its character.
Titanium: lightness and comfort
The case is crafted in titanium, a material emblematic at Hublot for its technical qualities. Lightweight, robust, and offering an excellent strength-to-weight ratio, titanium ensures optimal wrist comfort, even for a chronograph of this scale.
Finished with satin-brushed and polished surfaces, it highlights the case’s layered construction and reinforces the architectural reading of the whole. Titanium fully contributes to the versatility and wearability of this Big Bang Original Unico.
Strap & functionality
The watch is fitted with a structured Coal Blue rubber strap, perfectly matched to the dial. True to Hublot’s DNA, this strap guarantees flexibility, secure fit, and everyday comfort. It is equipped with the One Click quick-change system, allowing the strap to be replaced without tools in just a few seconds.
The titanium deployant clasp ensures precise adjustment and optimal security. Designed to accompany movement, this Big Bang Original Unico Titanium Coal Blue combines aesthetics, functionality, and real-world wearability.
Specifications
Water Resistant
100 m
Watch movement
In house automatic movement
Diameter
43 mm
Matière
Titanium
Power reserve
72 hours
Strap - Bracelet
Rubber
-
Brand
- Hublot
-
Reference
- 431.NX.717B.RX
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Condition
- New
-
Country of manufacture
- Switzerland
-
Brand Collection
- Big Bang - Hublot
-
Launch year
- 2026
-
Gender
- Man
-
Must-Have / Essentials
- Limited edition
-
Case material
- Titanium
-
Water Resistant
- 100 m
-
Diameter
- 43 mm
-
Crystal
- Breaks and scratches with difficulty, anti-reflective treatment, Sapphire crystal
-
Watch movement
- In house automatic movement
-
Movement model
- Hublot UNICO HUB1280
-
Power reserve
- 72 hours
-
Strap materials
- Rubber
-
Buckle
- Deployant clasp
- Subcollection
- Big Bang Original Unico
- Case shape
- Round
- Case material
- Titanium
- Finishing of the case
- Brushed and polished
- Lugs
- Titanium
- Water Resistant
- 100 m
- Diameter
- 43 mm
- Case Thickness
- 13,2 mm
- Case features
- Sapphire display back
- Crown
- 2 push-buttons, 3 o'clock
- Crystal
- Breaks and scratches with difficulty, anti-reflective treatment, Sapphire crystal
- Bezel
- Fixed bezel
- Bezel color
- Grey
- Bezel / Insert material
- Titanium
- Dial
- Stamped «Carbon Effect»
- Dial color
- Blue
- Marker
- Stick pointer
- Dial type
- Chronograph
- Display
- Analog, Small second counter, Date window, 60 minutes counter
- Lume
- Super-LumiNova
- Hands
- Luminescent
- Watch movement
- In house automatic movement
- Movement model
- Hublot UNICO HUB1280
- Balance frequency
- 28 800 Vibrations per hour (VpH) (4 Hz)
- Stones
- 43 jewels
- Functions/complications
- Chronograph, Date, Subsidiary seconds
- Complications/functions
- Chronograph, Date, Hours Minutes Seconds, Flyback
- Specific characteristics
- Column wheel, Silicium escapement
- Power reserve
- 72 hours
- Strap materials
- Rubber
- Strap finish
- Textured
- Strap color
- Blue
- Buckle
- Deployant clasp with push-buttons
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The spirit of the royal tudor
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