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Hublot Big Bang Original Unico Titanium Coal Blue automatic blue dial rubber strap 43 mm
Hublot Big Bang Original Unico Titanium Coal Blue automatic blue dial rubber strap 43 mm
Hublot Big Bang Original Unico Titanium Coal Blue automatic blue dial rubber strap 43 mm
Hublot Big Bang Original Unico Titanium Coal Blue automatic blue dial rubber strap 43 mm
Hublot Big Bang Original Unico Titanium Coal Blue automatic blue dial rubber strap 43 mm
Hublot Big Bang Original Unico Titanium Coal Blue automatic blue dial rubber strap 43 mm
Hublot Big Bang Original Unico Titanium Coal Blue automatic blue dial rubber strap 43 mm
Hublot Big Bang Original Unico Titanium Coal Blue automatic blue dial rubber strap 43 mm
Hublot Big Bang Original Unico Titanium Coal Blue automatic blue dial rubber strap 43 mm

Hublot Big Bang Original Unico Titanium Coal Blue automatic blue dial rubber strap 43 mm

Ref. 431.NX.717B.RX
€20,000.00
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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

Brand
Hublot
Reference
431.NX.717B.RX
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
The opinion of the Lepage team
This Big Bang Original Unico Titanium Coal Blue is a particularly successful interpretation of the Big Bang DNA. The contrast between the striking architecture of the case and the softness of the Coal Blue hue creates a unique balance that is more elegant and versatile for everyday wear. Combined with the Unico manufacture caliber, it is the ideal Big Bang for those seeking a technical chronograph with a strong identity, but one that is less radical in its expression.
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SHOP THE COLLECTION
HUBLOT
Reference
456.NX.0170.NX
Brand Collection
Big Bang - Hublot
Crystal
anti-reflective treatment Sapphire crystal
Functions (Bloc FP)
Automatic Sapphire crystal Water resistance 100 m Date Hour, Minute, Second 2 year warranty Titanium bracelet
HUBLOT
Reference
421.NX.1170.RX
Brand Collection
Big Bang - Hublot
Power reserve
72 hours
Buckle
Deployant clasp with push-buttons
HUBLOT
Reference
301.SX.710.RX
Brand Collection
Big Bang - Hublot
Crystal
Breaks and scratches with difficulty anti-reflective treatment Sapphire crystal
Power reserve
42 hours
HUBLOT
Reference
301.CM.130.RX
Brand Collection
Big Bang - Hublot
Crystal
Breaks and scratches with difficulty anti-reflective treatment Sapphire crystal
Power reserve
42 hours
HUBLOT
Reference
301.SB.131.RX
Brand Collection
Big Bang - Hublot
Crystal
anti-reflective treatment Sapphire crystal
Power reserve
42 hours
HUBLOT
Reference
444.QN.1170.NR
Brand Collection
Big Bang - Hublot
Crystal
Breaks and scratches with difficulty anti-reflective treatment Sapphire crystal
Power reserve
10 jours
HUBLOT
Reference
444.NX.1170.RX
Brand Collection
Big Bang - Hublot
Crystal
Breaks and scratches with difficulty anti-reflective treatment Sapphire crystal
Power reserve
10 jours
HUBLOT
Reference
444.OX.1180.RX
Brand Collection
Big Bang - Hublot
Crystal
Breaks and scratches with difficulty anti-reflective treatment Sapphire crystal
Power reserve
10 jours
HUBLOT
Reference
421.CY.471Y.RX
Brand Collection
Big Bang - Hublot
Crystal
Breaks and scratches with difficulty anti-reflective treatment Sapphire crystal
Power reserve
72 hours
HUBLOT

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