Hublot Big Bang Unico Titanium Blue Ceramic 44mm 421.NL.5170.RX - BRAND NEW

The Hublot Big Bang Unico in reference 421.NL.5170.RX represents one of the most architecturally ambitious expressions of modern Swiss watchmaking. Introduced as the flagship complication within the Big Bang family, the Unico line is defined by Hublot's proprietary in-house flyback chronograph movement, visible through the open-worked dial and exhibition caseback — a declaration that complexity and transparency go hand in hand. This 44mm titanium example with a blue dial is among the most desirable configurations in the current Big Bang Unico collection.

The 44mm titanium case of the 421.NL.5170.RX strikes the ideal balance between commanding wrist presence and everyday wearability. Titanium is prized in high-end watchmaking for its exceptional strength-to-weight ratio: the case is noticeably lighter on the wrist than steel yet more resistant to corrosion and scratching under daily conditions. The polished and satin-finished surfaces of the multi-part Big Bang case catch light from every angle, lending the watch a sculptural quality that photographs cannot fully convey.

The ceramic bezel is a defining element of this reference, setting it apart from standard titanium Big Bang models. Hublot's high-tech ceramic is extraordinarily hard, virtually scratch-proof, and holds its color — here a deep, rich tone complementing the blue dial — for the life of the watch. The integrated ceramic bezel screws into the case via the signature exposed H-shaped titanium screws, a design detail that has become one of the most recognized visual codes in contemporary luxury watchmaking.

The blue dial of the 421.NL.5170.RX uses a combination of index and Arabic numeral hour markers, providing excellent legibility while maintaining a sporty, contemporary aesthetic. The skeleton architecture of the dial reveals the Unico movement working beneath, with the flyback chronograph pushers at 2 and 4 o'clock integrated seamlessly into the case middle. The rubber strap, developed with Hublot's proprietary rubber technology, is supple, durable, and precisely shaped to follow the curvature of the wrist — making this an exceptionally comfortable wear for extended periods.

At the heart of the Big Bang Unico beats Hublot's in-house automatic chronograph caliber, a column-wheel flyback movement that represents years of movement development at the manufacture in Nyon, Switzerland. The movement can be admired through the sapphire exhibition caseback, its bridges and rotor finishing offering a view of genuine horological craft. The flyback function allows the chronograph to be reset and restarted with a single push rather than the traditional three-push sequence — a practical advantage for timing sequential events.

Bizak & Co. is proud to offer this reference 421.NL.5170.RX as a brand-new example, supplied in full Hublot presentation and ready for immediate acquisition. Buying from Bizak & Co. means working with an authorized and knowledgeable dealer who sources meticulously and stands behind every timepiece sold. Whether you are adding to a serious collection or acquiring your first Hublot, we invite you to contact our team directly — we offer competitive pricing, secure shipping, and the personal service that buyers of fine watches deserve.