Hublot Big Bang Unico King Gold Blue 44mm 421.OX.5180.RX - BRAND NEW

The Hublot Big Bang Unico 421.OX.5180.RX represents the pinnacle of what the Swiss manufacture has built since launching the original Big Bang in 2005. Conceived as an audacious fusion of materials, architecture, and in-house movement technology, the Big Bang Unico elevated the collection by introducing a skeletonized, manufacture-built flyback chronograph caliber visible through the open-worked dial. Over nearly two decades the Big Bang Unico has grown into one of the most recognizable luxury sport chronographs in the world, worn by athletes, artists, and collectors who demand both mechanical substance and head-turning design.

At 44mm, the King Gold case of reference 421.OX.5180.RX sits confidently on the wrist without feeling overbuilt. King Gold is Hublot's proprietary 18-karat rose-gold alloy, developed in-house to deliver a deeper, more saturated warmth than conventional red or rose gold while offering superior scratch resistance—a meaningful advantage for a watch designed to be worn actively. The multi-part case construction, with its distinctive H-shaped titanium screws securing the bezel, is immediately identifiable as a Hublot and reflects the brand's Art of Fusion philosophy.

The blue dial of the 421.OX.5180.RX creates a dynamic visual tension with the King Gold case. Index markers paired with Arabic numerals ensure legibility at a glance, while the open architecture of the Unico movement adds depth and mechanical theater to the dial side. Blue has long been one of the most coveted dial configurations in fine watchmaking, and on a King Gold Big Bang Unico it strikes a balance between assertive color and precious-metal luxury that few references can match.

Powering this reference is the Hublot Unico automatic chronograph movement, a manufacture caliber developed entirely within Hublot's La Chaux-de-Fonds facilities. The Unico is a column-wheel, horizontal-clutch flyback chronograph, a construction associated with the finest Swiss chronograph movements, and its architecture is designed to be appreciated through the caseback as well as the dial. Finishing is consistent with a luxury sport chronograph at this tier, with bridges and rotors bearing Hublot's distinctive decorative style.

The rubber strap completes the package with a material that Hublot pioneered in fine watchmaking. Far from an afterthought, Hublot's rubber straps are molded for precise fit, resist degradation from sweat and UV exposure, and keep the wrist comfortable whether the watch is worn at a boardroom table or dockside. The King Gold deployant clasp ensures security while maintaining the precious character of the overall piece.

Bizak & Co. is pleased to offer this brand-new Hublot Big Bang Unico 421.OX.5180.RX at the best price. Purchasing from Bizak means working with a trusted luxury watch dealer committed to authenticity, transparent pricing, and white-glove service. Whether you are adding to an established collection or acquiring your first Hublot, our team is ready to assist. Visit bizakandco.com or contact us directly to secure this exceptional timepiece.