Hublot Square Bang 42mm 821.OX.0180.RX.0904
The Hublot Square Bang 42mm 821.OX.0180.RX.0904 is a bold expression of modern luxury watchmaking, combining Hublot’s innovative design philosophy with exceptional Swiss craftsmanship. Featuring a distinctive square-shaped case, precious metal construction, and a sophisticated skeleton dial, this timepiece delivers a unique alternative to traditional luxury watches.
Designed for collectors who appreciate contemporary aesthetics and technical excellence, the Square Bang showcases Hublot’s commitment to pushing the boundaries of materials, shapes, and mechanical innovation.
Distinctive Square Design
The standout feature of the Hublot Square Bang is its architectural square case design. Measuring 42mm, the case offers a powerful wrist presence while maintaining the refined proportions expected from a high-end luxury watch.
Inspired by Hublot’s iconic Big Bang collection, the Square Bang introduces a fresh geometric silhouette. Its sharp lines, polished surfaces, and modern structure create a striking appearance from every angle.
Precious Metal Case Construction
The watch features a luxurious case crafted from 18K King Gold, Hublot’s exclusive gold alloy known for its warmer color and enhanced durability.
The combination of polished and satin-finished surfaces highlights the craftsmanship of the case. This unique material choice gives the watch a rich appearance while reflecting Hublot’s expertise in advanced metallurgy.
Open-Worked Skeleton Dial
The skeleton dial reveals the intricate mechanical components beneath the surface. This transparent design allows the wearer to admire the movement’s architecture and finishing details.
Applied hour markers and luminous hands provide excellent readability, while the open-worked layout creates a dynamic and technical appearance.
Every detail of the dial reflects Hublot’s philosophy of combining art, engineering, and contemporary design.
Hublot HUB1280 UNICO Automatic Chronograph Movement
Powering the Square Bang is the Hublot HUB1280 UNICO automatic chronograph movement. This advanced in-house calibre is designed for precision, reliability, and high performance.
The movement features a flyback chronograph function, allowing the wearer to reset and restart the chronograph instantly with a single push. It also provides approximately 72 hours of power reserve.
The open-worked construction complements the skeleton dial, offering a clear view of the impressive mechanical engineering inside.
Comfortable Rubber Strap Design
The watch is fitted with a premium black rubber strap that perfectly complements the case. Known for its durability and comfort, the strap provides a secure fit for everyday wear.
A matching folding clasp ensures excellent wrist stability while maintaining the watch’s luxurious appearance.
A New Generation of Hublot Design
The Hublot Square Bang 42mm 821.OX.0180.RX.0904 represents a new direction in luxury watch design. Its square case, King Gold construction, skeleton dial, and UNICO chronograph movement make it a remarkable statement piece.
Combining bold aesthetics with advanced Swiss engineering, this timepiece is designed for collectors who want something distinctive, modern, and unmistakably Hublot.
Key Features
- Hublot Square Bang
- Reference 821.OX.0180.RX.0904
- 42mm square-shaped case
- 18K King Gold case material
- Open-worked skeleton dial
- Hublot HUB1280 UNICO automatic chronograph movement
- Flyback chronograph function
- Approximately 72-hour power reserve
- Black rubber strap
- Folding clasp
- Sapphire crystal with anti-reflective treatment
- 100-meter water resistance
- Swiss-made luxury chronograph
Frequently Asked Questions
What makes the Hublot Square Bang different from other Hublot watches?
The Square Bang stands out with its unique square-shaped case design. It combines Hublot’s recognizable Big Bang DNA with a more architectural and modern silhouette.
What movement powers the Hublot Square Bang 821.OX.0180.RX.0904?
The watch is powered by the HUB1280 UNICO automatic chronograph movement, an in-house Hublot calibre featuring flyback chronograph functionality and approximately 72 hours of power reserve.
What material is used for the case?
The watch features an 18K King Gold case, Hublot’s proprietary gold alloy designed to provide a warmer tone and enhanced durability compared with traditional gold.
What size is the Hublot Square Bang?
The watch features a 42mm case size, offering a bold appearance while remaining comfortable for daily wear.
Is the Hublot Square Bang water resistant?
Yes. The watch provides 100 meters of water resistance, making it suitable for everyday activities and light water exposure.
Is the Hublot Square Bang a collector’s watch?
Yes. Its distinctive square design, precious metal construction, skeleton dial, and advanced in-house movement make it an attractive choice for luxury watch collectors.
Why choose the Hublot Square Bang 821.OX.0180.RX.0904?
The Square Bang combines innovative design, premium materials, and advanced Swiss mechanics. It is an ideal choice for collectors seeking a modern luxury watch with a unique identity.




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