Strap for Big Bang Unico 42 King Gold / Black

No. The bracelet is integrated into the case with Hublot's proprietary attachment system: a standard strap simply has no way to connect. There is no conventional lug width to work with. The only solution is to build a strap from scratch, directly on the watch.

I work on this model exclusively through <a href="/pages/casati-booking">Casati Milano</a>, by appointment at the atelier in Via XX Settembre 15, Milan. I take the watch to the bench, measure directly from the actual case, and shape the attachments by hand, one at a time. I never work from photographs or measurements provided by the client: every Big Bang has its own geometry, and I need to feel it.

For a Big Bang in Red Gold, my choice is matte Mississippi Alligator. Red gold has a strong chromatic warmth, and a glossy leather risks making the wrist feel heavy. Matte alligator holds its own against the case without overwhelming it, and over time it develops a patina that tells a story — something I find far more interesting than a surface that never changes.

A strap built with quality leather and hand-stitched will easily last five to eight years of regular use — sometimes longer. It depends greatly on how it is treated: kept away from prolonged water exposure, allowed to breathe between wearings. Vegetable-tanned leathers, like the Tuscan hide I often use, age in a living way: they darken, soften, and take on the shape of the wrist. That is not wear — it is character, accumulated over time.

The philosophy Biver called "Art of Fusion" is not a slogan — it is a precise structural choice. The case combines materials and languages that normally do not belong together: red gold and technical geometry, traditional watchmaking and industrial design. At the bench, working on a Big Bang, I can see how carefully every component is designed to speak to the others. It is not a watch that accepts generic solutions, and for me, that is exactly where the bespoke work begins.