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Hublot Shaped Square Bang Unico Magic Gold 42mm 821.MX.0130.RX

Hublot Shaped Square Bang Unico Magic Gold 42mm 821.MX.0130.RX Hublot Shaped Square Bang Unico Magic Gold…

Reference 821.MX.0130.RX

Full watch configuration

Hublot Shaped Square Bang Unico Magic Gold 42mm 821.MX.0130.RX

$33,199.00

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 Magic Gold 42mm 821.MX.0130.RX

Hublot Shaped Square Bang Unico Magic Gold 42mm 821.MX.0130.RX

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Hublot Shaped Square Bang Unico Magic Gold 42mm 821.MX.0130.RX

Catalogue watch price: $33,199.00 USD

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The Hublot Square Bang Unico 821.MX.0130.RX is a 42mm luxury skeleton-style timepiece housed in Hublot's proprietary Magic Gold case, fitted with a black index dial and a Magic Gold bezel. The signature rubber bracelet delivers the bold, sport-luxury aesthetic that defines the Square Bang Unico collection. This reference represents one of the most technically ambitious expressions of the Square Bang family, combining an unconventional case geometry with one of the hardest gold alloys ever developed.

What sets reference 821.MX.0130.RX apart is the use of Hublot's legendary Magic Gold—a scratch-resistant 18k gold alloy that stands virtually alone in the world of fine watchmaking for its extraordinary hardness and durability. Available at Bizak & Co., this is a rare opportunity to acquire a piece that fuses haute horlogerie artistry with cutting-edge materials science. Contact Bizak today to learn more or buy online.

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.MX.0130.RX sits at the apex of the Square Bang collection, a line that boldly reimagines the traditional round watch case with a refined square silhouette distinguished by Hublot's unmistakable porthole-lug architecture. Introduced as part of Hublot's ongoing mission to fuse fine watchmaking with avant-garde materials innovation, the Square Bang Unico represents one of the brand's most ambitious departures from convention—proving that a square case can carry the same commanding presence as any of the round icons in the luxury watch world.

The defining material story of this reference is Magic Gold, a proprietary 18k gold alloy developed exclusively by Hublot in partnership with the École Polytechnique Fédérale de Lausanne. By infusing a gold-ceramic composite under extreme pressure and heat, Hublot engineers created an alloy that measures approximately 1,000 on the Vickers hardness scale—roughly five times harder than standard 18k yellow gold—making it extraordinarily resistant to the everyday scratches and scuffs that afflict conventional precious-metal cases. On the 42mm case of the 821.MX.0130.RX, Magic Gold lends a warm, unmistakably rich luster while preserving the surface integrity that discerning collectors demand.

The dial architecture of the Square Bang Unico 821.MX.0130.RX pairs a bold black ground with clean index hour markers, a combination that creates high legibility and a dramatic contrast against the warm golden case and bezel. The Magic Gold bezel echoes the case material seamlessly, reinforcing the monolithic, unified aesthetic that Hublot has refined across the Unico platform. Every design element—from the angular case profile to the carefully proportioned indices—has been engineered to project authority on the wrist without sacrificing clarity of timekeeping.

Comfort and wearability are addressed through the integrated rubber bracelet, a hallmark of Hublot's sport-luxury DNA. The bracelet's tactile resilience and secure fit make the Square Bang Unico genuinely versatile: equally at home against a dress shirt cuff or in more active, casual settings. At 42mm, the case occupies a sweet spot that reads as a statement piece on a wide range of wrist sizes without crossing into oversized territory, striking a balance between presence and everyday wearability.

Purchasing the Hublot Square Bang Unico 821.MX.0130.RX from Bizak & Co. means acquiring an example of one of the most technically sophisticated and visually arresting square-cased watches on the market today. Bizak & Co. offers an unrivaled level of expertise, transparency, and client service for collectors and first-time luxury watch buyers alike. Whether you are looking to buy online or prefer a more personalized consultation, the team at bizakandco.com is ready to guide you through every detail of this exceptional timepiece and ensure your acquisition is as satisfying as wearing it.

Technical Details
Reference
821.MX.0130.RX
Model
Square Bang Unico
Case material
Yellow Gold
Bracelet material
Rubber
Dial
Black with index hour markers
Case size
42mm
FAQ

1. What makes the Hublot Square Bang Unico 821.MX.0130.RX special?
The 821.MX.0130.RX stands out through its combination of a bold square case geometry and Hublot's proprietary Magic Gold—an 18k gold-ceramic composite that is roughly five times harder than standard gold. This makes it one of the very few luxury watches that offers the prestige of precious metal with exceptional scratch resistance. The unified Magic Gold case, bezel, and black index dial create a cohesive, high-impact aesthetic unlike almost any other watch on the market.

2. What movement powers the Hublot Square Bang Unico 821.MX.0130.RX?
The Square Bang Unico collection is built around Hublot's in-house Unico movement, a manufacture caliber known for its column-wheel flyback chronograph architecture and skeletonized construction. Specific caliber details for this reference are best confirmed with Bizak & Co. directly, as configuration details can vary. Contact our team at bizakandco.com for complete technical specifications.

3. What is the case size of the Hublot Square Bang Unico 821.MX.0130.RX?
This reference features a 42mm case crafted entirely in Hublot's Magic Gold alloy. The 42mm footprint gives the watch a strong wrist presence suitable for a wide range of wrist sizes without feeling excessively large. The square case shape also contributes to a distinctive visual footprint that differs from a conventional round 42mm watch.

4. Is the Hublot Square Bang Unico 821.MX.0130.RX suitable for everyday wear?
Yes—while it is unquestionably a luxury statement piece, the Magic Gold case's exceptional hardness means it resists the surface scratches that would mark a conventional gold watch over time. The rubber bracelet adds practical comfort and resilience for daily use. This combination of precious-material prestige and sport-watch durability is precisely the philosophy at the heart of Hublot's Art of Fusion ethos.

5. What is the dial and bracelet of the 821.MX.0130.RX like?
The dial features a black ground set with clean index hour markers, providing strong contrast and easy legibility against the warm Magic Gold case. The bracelet is constructed from Hublot's characteristic high-quality rubber, offering a secure and comfortable fit on the wrist. Together, the black dial and rubber bracelet balance the opulence of the Magic Gold case with a sporty, modern sensibility.

6. Is the Hublot Square Bang Unico 821.MX.0130.RX a good investment, and how can I buy it?
Magic Gold Hublot references are produced in limited quantities due to the complexity of the proprietary manufacturing process, which supports their collectibility and long-term desirability among enthusiasts. Reserve this watch online with a $200 deposit. Visit bizakandco.com or contact our team directly to purchase the 821.MX.0130.RX online or arrange a personalized consultation.

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

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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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