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Hublot Shaped Square Bang Unico King Gold 42 mm 821.OX.0180.RX

Hublot Shaped Square Bang Unico King Gold 42 mm 821.OX.0180.RX Hublot Shaped Square Bang Unico King Gold…

Reference 821.OX.0180.RX

Full watch configuration

Hublot Shaped Square Bang Unico King Gold 42 mm 821.OX.0180.RX

$41,499.00

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 King Gold 42 mm 821.OX.0180.RX

Hublot Shaped Square Bang Unico King Gold 42 mm 821.OX.0180.RX

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Hublot Shaped Square Bang Unico King Gold 42 mm 821.OX.0180.RX

Catalogue watch price: $41,499.00 USD

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The Hublot Square Bang Unico 821.OX.0180.RX is a 42mm automatic watch crafted in Hublot's proprietary King Gold alloy, featuring a striking black index dial and a bold squared-case silhouette that sets it apart from the round Big Bang family. The King Gold bezel and matching case deliver a warm, rose-gold-toned luxury presence, while the black rubber strap keeps the overall aesthetic modern and sport-ready.

Reference 821.OX.0180.RX represents Hublot's daring departure into angular horology, combining the technical DNA of the Unico line with avant-garde case geometry rarely seen at this price point in haute horlogerie. Contact Bizak & Co. today to buy this Square Bang Unico online or speak with one of our watch specialists about pricing and availability.

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

Buy this Big Bang Unico, trade in your current watch, or sell us yours. Contact Bizak & Co. to make an offer or request a fair-market valuation.

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The Hublot Square Bang Unico 821.OX.0180.RX is one of the most architecturally distinctive timepieces Hublot has ever produced, translating the brand's iconic Big Bang philosophy into a bold, squared case format that commands immediate attention on the wrist. Launched as part of Hublot's ongoing commitment to pushing the boundaries of traditional Swiss watchmaking, the Square Bang Unico line proved that a house known for barrel-shaped cases could master geometric horology with equal authority. At 42mm across its King Gold case, the reference strikes a balance between statement-making presence and genuine everyday wearability.

King Gold is Hublot's proprietary 18-karat rose gold alloy, developed in-house to deliver greater hardness and scratch resistance than standard rose gold while retaining the warm, amber-tinged luster that collectors prize. The 42mm case of reference 821.OX.0180.RX is constructed entirely in this material, from the angular lugs and integrated crown guards to the polished and satin-brushed surfaces that define the watch's faceted architecture. The result is a case that feels both precious and rugged — a hallmark of the Art of Fusion philosophy Hublot has championed since its founding.

The black index dial sits behind a domed or flat sapphire crystal and presents a clean, legible face anchored by applied index hour markers and bold hands. Black dials on King Gold references create a high-contrast pairing that photographs dramatically and reads with immediacy in real-world light conditions, whether worn under boardroom lighting or at an evening event. The overall dial composition is purposefully uncluttered, allowing the angular geometry of the case to do the aesthetic heavy lifting.

Powering reference 821.OX.0180.RX is Hublot's in-house Unico movement, a self-winding caliber developed entirely within the Hublot manufacture and representing a significant milestone in the brand's vertical integration journey. The Unico movement is celebrated within the collecting community for its column-wheel architecture and the manufacture credibility it lends to a brand that spent its early decades relying on third-party ebauches. The movement is visible through the exhibition caseback, adding a dimension of mechanical theatre to the ownership experience.

The black rubber strap is signature Hublot — vulcanized, textured, and engineered to be comfortable across long wearing periods while maintaining the sporty, modern aesthetic that first made the brand a favorite among athletes, entrepreneurs, and watch enthusiasts seeking something outside the conventional canon. The strap is easily interchangeable using Hublot's one-click system, allowing owners to adapt the watch's personality with minimal effort. Combined with the King Gold case, the rubber strap underscores the Art of Fusion concept: precious metal meeting performance material.

Our team of experienced watch specialists is available to answer detailed questions, arrange secure shipping, and provide the personalized service that discerning buyers expect. Explore this reference at bizakandco.com or reach out directly to discuss pricing and purchase options.

Technical Details
Reference
821.OX.0180.RX
Model
Big Bang Unico
Movement
Automatic
Case material
Rose Gold
Bracelet material
Rubber
Dial
Black with index markers
Case size
42mm
FAQ

1. What makes the Hublot Square Bang Unico 821.OX.0180.RX special?
The 821.OX.0180.RX stands out for its squared-case architecture, which is a dramatic departure from Hublot's traditional round Big Bang silhouette. Combined with a King Gold case, black index dial, and in-house Unico movement, it represents one of the most architecturally bold expressions in Hublot's current catalogue.

2. What movement powers the Hublot Square Bang Unico 821.OX.0180.RX?
Reference 821.OX.0180.RX is powered by Hublot's in-house Unico automatic movement, a self-winding caliber developed entirely within the Hublot manufacture. The movement features a column-wheel construction and is visible through an exhibition caseback, offering a compelling display of mechanical craftsmanship.

3. What is the case size of the Hublot Square Bang Unico King Gold?
The Hublot Square Bang Unico 821.OX.0180.RX measures 42mm, which positions it as a versatile size suitable for a wide range of wrist sizes. The squared case geometry means the watch has a strong visual presence even at 42mm, offering an imposing aesthetic without excessive bulk.

4. Is the Hublot Square Bang Unico 821.OX.0180.RX suitable for everyday wear?
Yes — while the King Gold case is undeniably luxurious, the rubber strap and robust Unico movement make this watch a practical choice for daily wear. The hardened King Gold alloy offers better scratch resistance than standard rose gold, and the strap is engineered for long-term comfort and durability.

5. What is the dial and case material on reference 821.OX.0180.RX?
The dial features a black background with index hour markers, creating a high-contrast and legible face that complements the warm tones of the King Gold case. The case is crafted from Hublot's proprietary King Gold, an 18-karat rose gold alloy developed in-house for enhanced hardness and a distinctive warm luster.

6. How can I buy the Hublot Square Bang Unico 821.OX.0180.RX from Bizak & Co.?
Our specialist team is available to answer questions, confirm availability, and arrange secure delivery — simply contact us through the website or reach out directly for a personalized buying experience.

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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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