Hublot Shaped Spirit of Big Bang Tourbillon Purple Sapphire 42mm 645.JM.0120.RT - BRAND NEW Hublot Shaped Spirit of Big Bang Tourbillon…

The Hublot Spirit of Big Bang Tourbillon in purple sapphire crystal, reference 645.JM.0120.RT, represents one of the most technically and aesthetically ambitious expressions in contemporary Swiss watchmaking. Introduced as part of Hublot's celebrated Spirit of Big Bang family, this 42mm tonneau-shaped reference elevates the line's hallmark barrel case into a tour de force of sapphire craftsmanship, wrapping the entire case — not merely the crystal — in the same ultra-hard, optically pure material that gives the watch its arresting violet presence.

The Spirit of Big Bang lineage grew from Hublot's iconic Big Bang round case, distilling its multi-part architecture and bold porthole-style screws into a more elongated, vintage-inspired barrel silhouette. Where the original Big Bang commanded attention through sheer size and contrast, the Spirit of Big Bang achieves drama through form and proportion, sitting elegantly across a range of wrist sizes while retaining the house's unmistakably assertive character. The 42mm diameter of this reference strikes a versatile balance — substantial enough to command presence, refined enough to complement formal attire.

Constructed from machined purple sapphire crystal, the case of the 645.JM.0120.RT is a feat of industrial artistry. Sapphire rates 9 on the Mohs hardness scale, making it exceptionally scratch-resistant yet extraordinarily difficult to shape. Each case element requires precision CNC machining followed by painstaking hand-polishing to achieve the flawless, jewel-like surfaces visible here. The result is a chromatic immersion: the deep purple hue saturates the case, the matching purple dial, and the bezel uniformly, creating a monochromatic statement that is simultaneously bold and sophisticated.

At the heart of this reference beats a tourbillon movement, the most storied and technically demanding complication in traditional watchmaking. The tourbillon's rotating cage, visible through the open-worked purple dial, counteracts the effects of gravity on the escapement, and in a fully transparent sapphire case it becomes pure kinetic sculpture — a horological spectacle framed by violet light. The rubber bracelet, a signature Hublot material born from the brand's founding philosophy of fusing natural rubber with precious materials, adds wearable comfort and a sporting counterpoint to the jewel-like case.

Owning the Hublot Spirit of Big Bang Tourbillon 645.JM.0120.RT means owning a conversation piece of the highest order — a watch that is as much wearable art as it is mechanical achievement. Bizak & Co. offers this reference brand new, ensuring every detail of Hublot's factory presentation is intact. Our team of specialist advisors is ready to provide full product information, assist with acquisition, and support you through every step of ownership. Reach out to Bizak & Co. at bizakandco.com to purchase this extraordinary timepiece today.