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

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

Reference 821.NL.5170.RX

Full watch configuration

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

$20,399.00
Requested condition
Brand New

By Hublot

Sourced to order. We confirm the watch, condition and final price before purchase. Reference images shown.

Eligible watches: 90-day returns for store credit only. Brand-new watches and other exclusions are final sale. Return terms.

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

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

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

Catalogue watch price: $20,399.00 USD

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The Hublot Square Bang Unico 821.NL.5170.RX is a brand-new 42mm square-cased automatic chronograph built in titanium, featuring a striking blue index dial and a matching blue ceramic bezel. A rubber bracelet completes the sport-luxury aesthetic that defines the Square Bang Unico family.

This reference stands out through its rare combination of lightweight titanium construction, bold ceramic color accents, and the in-house Unico flyback chronograph movement — making it one of the most compelling pieces in Hublot's current lineup. Contact Bizak & Co. today to purchase the 821.NL.5170.RX at the best available price or to learn more about this exceptional timepiece.

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

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The Hublot Square Bang Unico 821.NL.5170.RX represents the pinnacle of the brand's departure from the round-case orthodoxy that dominates haute horlogerie. Introduced as an evolution of the iconic Big Bang DNA, the Square Bang Unico reframes Hublot's design language inside a bold 42mm square case, delivering an immediately recognizable silhouette that commands attention on the wrist without abandoning the technical ambition the brand is celebrated for.

At the heart of this reference is the choice of materials. The 42mm case is crafted from satin-finished and polished titanium — a metal prized in watchmaking for its exceptional strength-to-weight ratio and its remarkable comfort during extended wear. Titanium's natural hypoallergenic properties and resistance to corrosion make it a thoroughly practical choice for a watch worn as boldly as it is admired. The result is a substantial presence that nevertheless feels effortlessly light on the wrist.

The blue ceramic bezel elevates the 821.NL.5170.RX beyond a purely monochromatic study. Ceramic is scratch-resistant, colorfast, and holds its luster far longer than conventional metal or PVD treatments — qualities that matter when a bezel is as architecturally prominent as it is on the Square Bang. The blue tone is deep and rich, coordinating beautifully with the blue index dial beneath it. Index hour markers on the dial maintain legibility while contributing to the watch's refined, uncluttered aesthetic.

Powering the Square Bang Unico 821.NL.5170.RX is Hublot's in-house Unico automatic flyback chronograph movement, an integrated caliber developed entirely within the manufacture. The Unico movement is widely respected among collectors for its column-wheel control, lateral clutch, and the fact that it enables Hublot to display the chronograph mechanism through a skeletonized or exhibition-style architecture — a hallmark of the Square Bang's dial design. The rubber bracelet, a Hublot signature since the original Big Bang, grounds the watch in the brand's sport-luxury philosophy and ensures a secure, comfortable fit for active wear.

Buying the Hublot Square Bang Unico 821.NL.5170.RX from Bizak & Co. means purchasing a brand-new example backed by the full manufacturer's warranty and the expertise of a trusted luxury watch dealer. At Bizak & Co. we are committed to offering the best price on every reference we carry, with transparent service and direct access to our team of specialists. Reach out today to secure your 821.NL.5170.RX or to explore our full selection of current and collectible Hublot timepieces.

Technical Details
Reference
821.NL.5170.RX
Model
Square Bang Unico
Movement
Automatic
Case material
Titanium
Bracelet material
Rubber
Dial
Blue with index hour markers
Case size
42mm
Requested condition
Brand New
FAQ

1. What makes the Hublot Square Bang Unico 821.NL.5170.RX special?
The 821.NL.5170.RX combines a bold 42mm square titanium case with a blue ceramic bezel and blue index dial — a rare and visually striking configuration in Hublot's lineup. Add the in-house Unico flyback chronograph movement and you have a technically sophisticated piece that is equally compelling as a design statement.

2. What movement powers the Hublot Square Bang Unico 821.NL.5170.RX?
This reference is powered by Hublot's proprietary Unico automatic flyback chronograph movement, an in-house integrated caliber developed at the Hublot manufacture. The Unico is known for its column-wheel architecture and lateral clutch, hallmarks of refined chronograph engineering.

3. What is the case size of the Hublot Square Bang Unico 821.NL.5170.RX?
The Square Bang Unico 821.NL.5170.RX features a 42mm square case machined from lightweight titanium. The square format gives the watch a distinct footprint on the wrist that differs meaningfully from conventional round-case chronographs of the same nominal size.

4. Is the Hublot Square Bang Unico 821.NL.5170.RX suitable for everyday wear?
Yes — the titanium case is lightweight and hypoallergenic, the ceramic bezel is highly scratch-resistant, and the rubber bracelet is durable and comfortable for daily use. These material choices reflect Hublot's sport-luxury philosophy, making the watch equally at home in casual and formal settings.

5. What are the dial and bezel details on the 821.NL.5170.RX?
The dial is blue with index hour markers, providing a clean and legible read of the time. The bezel is crafted from blue ceramic, a material valued for its color fastness and scratch resistance, creating a cohesive and striking blue-on-titanium aesthetic.

6. How can I buy the Hublot Square Bang Unico 821.NL.5170.RX from Bizak & Co.?
The 821.NL.5170.RX is available brand new at Bizak & Co. via bizakandco.com, where you can purchase online or contact our team directly for pricing and availability. We are committed to offering the best price on this reference and provide expert guidance throughout the buying process.

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Exclusions include accidental damage, misuse, water damage, cosmetic damage, normal wear, loss and theft. Coverage and service availability for vintage or modified watches are confirmed in writing before purchase.

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90-Day Returns for Store Credit

Eligible watches may be returned within 90 days for store credit. Brand-new watches and other exclusions are final sale.

Read eligibility, condition requirements, and exclusions.

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U.S. overnight shipping is $100; international shipping is $500. Dispatch takes 2–3 business days after your wire clears. International transit times vary. Shipping details.

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