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Hublot Big Bang Unico Titanium Blue 44mm 421.NX.5170.RX - BRAND NEW
  • Hublot Big Bang Unico Titanium Blue 44mm 421.NX.5170.RX - BRAND NEW
  • Hublot Big Bang Unico Titanium Blue 44mm 421.NX.5170.RX - BRAND NEW
Hublot Big Bang Unico Titanium Blue 44mm 421.NX.5170.RX - BRAND NEW

Hublot Big Bang Unico Titanium Blue 44mm 421.NX.5170.RX - BRAND NEW Hublot Big Bang Unico Titanium Blue 44mm…

Reference 421.NX.5170.RX

Full watch configuration

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

$14,899.00
Requested condition
Brand New

By Hublot

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

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

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

Catalogue watch price: $14,899.00 USD

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The Hublot Big Bang Unico 421.NX.5170.RX is a brand-new 44mm automatic chronograph presented in a satin-finished titanium case with a striking blue dial featuring both index markers and Arabic numerals. The titanium bezel and rubber strap complete a boldly modern sports-luxury aesthetic that has made the Big Bang Unico one of Hublot's most celebrated collections.

Reference 421.NX.5170.RX stands out for its vivid blue dial and lightweight titanium construction, delivering serious wrist presence without the heft of steel or precious metal alternatives. Contact Bizak & Co. today to purchase this Big Bang Unico at the best price or to learn more about our inventory of new Hublot watches for sale.

Compare it across every Big Bang Unico reference we carry, or browse the full Hublot collection at Bizak & Co.

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The Hublot Big Bang Unico is one of the most recognizable and coveted timepieces in contemporary watchmaking, and reference 421.NX.5170.RX represents the collection at its most boldly expressive. Introduced as a flagship complication within the Big Bang family, the Unico variant was developed to house Hublot's in-house movement — a decision that elevated the line from a design icon into a genuine manufacture piece. The result is a watch that satisfies both the connoisseur and the collector who demands a statement on the wrist.

The 44mm titanium case of the 421.NX.5170.RX is central to the watch's identity. Titanium is prized in fine watchmaking for its exceptional strength-to-weight ratio: it is roughly 30 percent lighter than steel yet extraordinarily resistant to scratches, corrosion, and the rigors of daily wear. The satin and polished finishing typical of the Big Bang case architecture gives the watch a purposeful, almost architectural quality that photographs and wears beautifully in equal measure.

The blue dial is the visual heart of this reference. A deep, rich blue sets the stage for a dial layout that combines index hour markers with Arabic numerals, a combination that reads with instant legibility while lending the watch a sporty, modern character. Subdials for the chronograph function are integrated with careful symmetry, and the skeletonized or layered architecture visible through the dial connects the wearer to the movement working beneath — a hallmark of Hublot's design philosophy of openness and transparency.

Powering the 421.NX.5170.RX is an automatic movement developed in-house by Hublot for the Unico line. This caliber is a column-wheel flyback chronograph movement, a technically sophisticated architecture that allows the chronograph to be reset and restarted in a single fluid motion — a feature prized by pilots, athletes, and watch enthusiasts who demand precision timing. The movement is visible through the exhibition caseback, inviting appreciation of its finishing and engineering.

The rubber strap rounds out the package with a comfort-first approach that suits the Big Bang's sporty DNA. Hublot pioneered the integration of high-quality natural rubber into luxury watchmaking, and the strap on this reference is designed for secure fit and lasting durability in all conditions. Titanium deployant or pin-buckle hardware ensures the strap remains as refined as the case it supports.

At Bizak & Co., we offer this brand-new Hublot Big Bang Unico 421.NX.5170.RX at the best available price with the confidence of an authorized and trusted luxury watch dealer. Whether you are buying your first Hublot or adding a statement blue-dial chronograph to a serious collection, our team is ready to assist. Explore this reference and our full Hublot inventory at bizakandco.com, or contact us directly — we are here to make your purchase seamless, secure, and satisfying.
Technical Details
Reference
421.NX.5170.RX
Model
Big Bang Unico
Movement
Automatic
Case material
Titanium
Bracelet material
Rubber
Dial
Blue with index and Arabic numerals
Case size
44mm
Requested condition
Brand New
FAQ

1. What makes the Hublot Big Bang Unico 421.NX.5170.RX special?
The 421.NX.5170.RX combines a bold blue dial with Arabic numerals and index markers, a lightweight 44mm titanium case, and an in-house automatic chronograph movement — making it one of the most technically and aesthetically complete watches in the Big Bang Unico lineup. Its titanium construction keeps the watch surprisingly light on the wrist despite its commanding 44mm presence. The vivid blue color and Hublot's signature open design philosophy make this reference instantly recognizable.

2. What movement powers the Hublot Big Bang Unico 421.NX.5170.RX?
This reference is powered by an in-house automatic Hublot Unico caliber, a column-wheel flyback chronograph movement developed entirely by Hublot. The flyback complication allows the chronograph to be reset and restarted in one single push of the pusher, a sophisticated function valued by serious timing enthusiasts. The movement is visible through the exhibition caseback, showcasing Hublot's manufacture credentials.

3. What is the case size of the Hublot Big Bang Unico 421.NX.5170.RX?
The case measures 44mm in diameter and is crafted from titanium, giving it a bold, sporty presence that is a signature of the Big Bang Unico collection. Despite the substantial size, the titanium construction keeps the watch noticeably lighter than a comparable steel watch of the same dimensions. The 44mm format is ideal for those who prefer a strong wrist statement.

4. Is the Hublot Big Bang Unico 421.NX.5170.RX suitable for everyday wear?
Yes — the titanium case is highly resistant to scratches and corrosion, while the rubber strap is comfortable and durable across a wide range of activities and environments. The Big Bang Unico is designed as a sports-luxury watch, so it transitions naturally from casual to smart-casual settings. Its robust construction makes it a practical daily wearer for those who appreciate bold, high-performance timepieces.

5. What color and material is the dial on the 421.NX.5170.RX?
The dial on this reference is blue, featuring a combination of index hour markers and Arabic numerals for clear, immediate legibility. The blue finish gives the watch a contemporary and vibrant character that distinguishes it within the Big Bang collection. Chronograph subdials are integrated into the dial layout, maintaining the functional sports aesthetic Hublot is known for.

6. Is the Hublot Big Bang Unico 421.NX.5170.RX a good buy and how can I purchase it from Bizak & Co.?
The Big Bang Unico in titanium with a blue dial is a highly sought-after reference that holds strong appeal with collectors and enthusiasts for its in-house movement, distinctive design, and lightweight titanium build — making it an excellent acquisition. Bizak & Co. offers this watch brand new at the best available price with the assurance of a trusted luxury dealer. Visit bizakandco.com or contact our team directly to purchase the 421.NX.5170.RX and explore our full range of Hublot watches for sale.

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