Hublot Shaped Square Bang Unico Blue Ceramic 42mm 821.EX.5170.RX - BRAND NEW

The Hublot Square Bang Unico 821.EX.5170.RX is a definitive statement in contemporary haute horlogerie — a 42mm squared-case automatic chronograph rendered head-to-toe in blue ceramic, from the case and bezel to the integrated bracelet construction. Introduced as part of Hublot's Square Bang family, this reference marks a deliberate evolution of the brand's design philosophy, proving that the Art of Fusion concept extends far beyond round cases and traditional materials.

Hublot's Square Bang line was conceived to challenge assumptions about what a sports luxury watch can look like. Where the classic Big Bang established Hublot's reputation for bold, round case architecture, the Square Bang pushes further into avant-garde territory with its sharp corners, geometric angles, and seamless material language. The result is a watch that reads as unmistakably Hublot yet entirely its own object — more sculpture than instrument.

The 42mm ceramic case of the 821.EX.5170.RX is machined from high-tech blue ceramic, a material prized for its exceptional hardness, scratch resistance, and the depth of color it retains over decades of wear. Unlike coated or PVD treatments, the blue hue of this ceramic is integral to the material itself, meaning it will not chip, fade, or peel. The matching ceramic bezel reinforces the monochromatic aesthetic, and the blue index dial continues the cohesive visual theme with clean, legible hour markers that complement the overall design without competing with it.

Powering the Square Bang Unico is Hublot's in-house Unico automatic movement, the column-wheel flyback chronograph caliber that has become the technical backbone of Hublot's prestige sports watches. Visible through the exhibition caseback, the movement underscores that this is not merely a design exercise — it is a serious mechanical chronograph with manufacture credentials. The rubber bracelet, developed to integrate organically with the ceramic case, provides the comfort and flexibility that makes this watch genuinely wearable every day.

For collectors who want a watch that commands attention and communicates originality, the Hublot Square Bang Unico Blue Ceramic 821.EX.5170.RX is a compelling choice. It arrives brand new with box and papers, representing full manufacturer warranty coverage and the confidence of buying an untouched timepiece. At Bizak & Co., we specialize in sourcing and presenting references like this one — where rarity, design ambition, and mechanical substance converge. Reach out to our team or complete your purchase directly at bizakandco.com for the best price on this exceptional reference.