Hublot Big Bang Unico Full Magic Gold 42mm 441.MX.1138.RX

The Hublot Big Bang Unico Full Magic Gold 441.MX.1138.RX stands as one of the most technically remarkable watches in the contemporary luxury market. Introduced as part of Hublot's relentless push to fuse art and science, the Big Bang Unico line brought a fully in-house flyback chronograph movement together with bold, architecturally striking case design. This particular reference elevates the formula by clothing it entirely in Magic Gold — a material that redefined what a gold sports watch could be.

Magic Gold is Hublot's patented alloy, created by fusing 18-karat gold with boron carbide ceramic under extreme heat and pressure. The result is a gold compound with a Vickers hardness several times greater than standard 18k gold, meaning the case, bezel, and all exposed surfaces of the 441.MX.1138.RX resist the surface scratches that typically mar precious-metal sports watches over time. For a collector who wants genuine gold on the wrist without accepting the inevitable signs of wear, Magic Gold is the definitive answer.

The 42mm case diameter places the Big Bang Unico Full Magic Gold in the sweet spot of the Big Bang family — substantial and commanding on the wrist without overwhelming a wide range of wrist sizes. The black dial, dressed with a combination of index and Arabic numeral hour markers, provides high-contrast legibility and a bold, purposeful aesthetic that is unmistakably Hublot. The open-worked architecture of the Unico movement visible through the sapphire display adds another layer of technical theater to the dial side.

Powering the watch is Hublot's own automatic Unico caliber, a movement developed and manufactured entirely within the Hublot manufacture. The Unico movement incorporates a column-wheel flyback chronograph architecture with a horizontal clutch — features associated with haute horlogerie movements — delivered through a design engineered to be serviced and appreciated for decades. The movement is visible through the exhibition caseback, allowing the wearer and admirer alike to appreciate the finishing and engineering at close range.

On the wrist, the 441.MX.1138.RX delivers a presence that few watches can match. The warm, rich hue of Magic Gold catches light differently from steel or ceramic, and the black rubber strap grounds the boldness of the case with a sporting, modern contrast. This reference was produced as a limited edition, reinforcing its collectibility and ensuring that ownership carries a sense of exclusivity that standard production references simply cannot offer.

Bizak & Co. is proud to offer the Hublot Big Bang Unico Full Magic Gold 441.MX.1138.RX brand new, representing an outstanding opportunity to acquire this limited-edition reference with confidence. Our team of specialist advisors is available to answer questions, provide detailed photographs, and discuss acquisition. Contact Bizak & Co. today to secure one of watchmaking's most singular achievements.