Replica Hublot Spirit of Big Bang

Our hublot spirit of big bang replica collection features 12 models of Hublot’s tonneau-shaped (barrel) reinterpretation of the Big Bang, introduced in 2014. The Spirit of Big Bang takes every element of the round Big Bang — the sandwich case construction, six H-shaped titanium screws, integrated rubber strap, UNICO dial-side visible chronograph — and translates it into a cushion-shaped rectangular format measuring 42mm wide. This is not a stretched Big Bang; the movement, case architecture and dial layout were redesigned to fill a non-circular case while maintaining the same mechanical identity. The lineup includes UNICO flyback chronographs in titanium, ceramic and King Gold, Tourbillon references and the Meca-10 with 10-day power reserve display. Each replica hublot spirit of big bang carries the distinctive barrel silhouette that sets it apart from any other Hublot line. Browse the full range below, or return to the Replica Hublot collection.

Key References

Spirit of Big Bang UNICO Titanium (641.NM.0170.LR) — The core tonneau chronograph. 42mm titanium case with black ceramic bezel inserts, the HUB4700 UNICO caliber (tonneau-adapted version of the HUB1242) with flyback chronograph, column-wheel visible through the dial side, and 50-hour power reserve. Two chronograph registers flank the 12 o’clock axis. The defining Spirit of Big Bang reference — the same mechanical spectacle as the round Big Bang in a barrel-shaped case.
Spirit of Big Bang UNICO King Gold Ceramic (641.OM.0183.LR) — The luxury variant. 42mm King Gold case (18K red gold with 5% platinum) with black ceramic bezel inserts. The warm rose gold against matte ceramic and black rubber creates the same luxury-sport tension as the round Big Bang King Gold. HUB4700 UNICO flyback chronograph, 50-hour reserve. Polished and satin-brushed finishing alternates across the case facets.
Spirit of Big Bang Tourbillon Carbon (645.QN.1117.RX) — A tourbillon complication in the tonneau format. The tourbillon cage is visible at 6 o’clock through an aperture in the dial, rotating once per minute to compensate for positional rate errors. Carbon fiber case with titanium caseback, manual-wind movement with 5-day power reserve. The tonneau shape provides additional dial space around the tourbillon cage compared to round cases.
Spirit of Big Bang Meca-10 Titanium (614.NX.1170.RX) — The 10-day power reserve variant adapted to the tonneau case. The HUB1201 manual-wind movement with twin mainspring barrels and linear rack-and-pinion power reserve indicators visible on the dial. The barrel-shaped case allows the two rack indicators to span the full width of the dial face, making the power reserve display more visually prominent than in the round Big Bang Meca-10.

Movement and Build

The HUB4700 is the tonneau-adapted UNICO caliber — a flyback chronograph with column-wheel visible through the dial side, running at 28,800 vph with a 50-hour power reserve. The architecture mirrors the round UNICO: dial-side chronograph bridge, visible coupling lever and column wheel, twin registers for elapsed minutes and seconds. The movement plate shape is modified to fill the rectangular case proportions. The Tourbillon uses a manual-wind caliber with the cage at 6 o’clock and 5-day power reserve. Cases maintain the Hublot sandwich construction with six H-shaped screws on the bezel, but the rectangular shape adds visual complexity — each facet of the tonneau case has a distinct brushed or polished surface, requiring more finishing steps than the round Big Bang. Materials include micro-blasted titanium, King Gold, black ceramic and carbon fiber. The integrated rubber strap follows the barrel-shaped lug geometry, curving with the case contour for ergonomic wrist wrap.

How to Choose Your Spirit of Big Bang

If you want the full UNICO flyback chronograph experience in a non-round case, the Titanium (641.NM.0170.LR) is the balanced starting point — lightweight, durable and the purest expression of the tonneau concept. King Gold Ceramic adds luxury-sport warmth for more formal wrist presence. The Tourbillon is for complication enthusiasts who value the rotating cage as both a technical and aesthetic statement. The Meca-10 suits collectors drawn to the visual drama of the 10-day power reserve mechanism. If you prefer the round Big Bang format, explore the Big Bang. For a square angular case, see the Square Bang. For Hublot’s thinnest and most dressy option, check the Classic Fusion.

Frequently Asked Questions

What is the difference between Spirit of Big Bang and the round Big Bang?

The primary difference is case shape. The Spirit of Big Bang uses a tonneau (barrel/cushion) shaped case measuring 42mm wide, while the standard Big Bang is circular at 44-45mm. Mechanically, the Spirit uses the HUB4700 UNICO (tonneau-adapted) with 50-hour power reserve, versus the round Big Bang’s HUB1242 UNICO with 72-hour reserve. The shorter reserve is due to barrel shape constraints on mainspring barrel dimensions. Both share the signature elements — sandwich construction, six H-shaped titanium screws, dial-side visible chronograph, integrated rubber strap and One Click system. The Spirit of Big Bang offers a distinctly different wrist silhouette while maintaining the same Hublot fusion DNA.

What is a tonneau case shape?

Tonneau means “barrel” in French. In watchmaking, it describes a case shape that is wider than it is tall, with curved sides that taper toward the top and bottom — resembling a wine barrel viewed from the end. The Spirit of Big Bang’s tonneau is specifically a cushion-shaped variant with rounded corners and integrated lugs. Historically, tonneau cases appeared in the early 1900s (Cartier Tonneau, 1906) as an alternative to round pocket watch conversions. The shape provides more dial area for movement display and complications, which is why Hublot uses it to showcase the UNICO, Tourbillon and Meca-10 calibers.

How does the tourbillon work in the Spirit of Big Bang?

The tourbillon is a rotating cage that holds the balance wheel, hairspring and escapement. It completes one full rotation per minute. The purpose: when a watch sits in one position (for example, vertical in a pocket), gravity consistently pulls the balance wheel in one direction, creating a positional timing error. The tourbillon cage rotates the entire assembly through 360 degrees every 60 seconds, averaging out the gravitational effect across all positions. Invented by Abraham-Louis Breguet in 1801, the tourbillon is mechanically complex — the Spirit of Big Bang’s version requires the cage, its bearing and the escapement components to weigh under 0.3 grams for efficient operation. The aperture at 6 o’clock reveals the cage rotation in real time.

What size wrist does the Spirit of Big Bang fit?

The 42mm tonneau case has different wrist dynamics than a 42mm round case. The barrel shape extends more toward the top and bottom of the wrist (lug-to-lug direction), while the 42mm measurement is across the widest point (9 to 3 o’clock). Effective lug-to-lug distance is approximately 51mm. This means the Spirit of Big Bang wears larger in the vertical axis than a 42mm round watch. Wrists of 6.75 inches (17cm) and above typically wear the Spirit of Big Bang comfortably. Below 6.5 inches, the lug-to-lug distance may cause the strap to cantilever slightly rather than follow the wrist curvature. The integrated rubber strap’s flexibility helps compensate.

Is the Spirit of Big Bang discontinued?

No. As of the current catalog, the Spirit of Big Bang remains an active Hublot collection. Hublot continues to release new references and material combinations in the tonneau format. The 2014 launch introduced the concept, and subsequent years have added Tourbillon, Meca-10, Sang Bleu II and material variants (sapphire, carbon fiber) to the Spirit of Big Bang family. The collection occupies a distinct position in Hublot’s four-shape strategy: round (Big Bang, Classic Fusion), tonneau (Spirit of Big Bang) and square (Square Bang).

Related Collections

Explore more Hublot lines: Big Bang for the flagship round UNICO chronograph, Classic Fusion for the refined thin alternative, Square Bang for the angular square format. Compare tonneau shapes with Replica Franck Muller. Browse the full Replica Hublot catalog for all 76 models.