Hublot / Big Bang Unico SR_A

Key Highlights

• First SR_A signature model to house Hublot’s in-house HUB1280 Unico flyback chronograph calibre.
• Limited to 200 pieces in a 42mm satin-finished and polished black ceramic case.
• New black structured honeycomb rubber strap developed specifically for this reference.
• Matte black skeleton dial revealing the column wheel and open chronograph architecture.
• Approximate 72-hour power reserve, 100m water resistance and a black ceramic and black-plated titanium deployant clasp.

Hublot and British designer Samuel Ross MBE extend their collaboration with the Big Bang Unico SR_A, the first SR_A watch to be powered by the Manufacture’s Unico chronograph movement. Presented in Milan and limited to 200 pieces, it translates Ross’s industrial, architectural vocabulary into a more widely available expression within Hublot’s emblematic chronograph line.

Monochrome and technical, the Big Bang Unico SR_A combines a 42mm black ceramic case, a newly developed honeycomb rubber strap and the HUB1280 Unico calibre. Earlier SR_A pieces explored sculptural tourbillon constructions in smaller runs; this reference broadens the collaboration, aligning it more closely with the wider Big Bang collection while preserving the distinctive SR_A identity.

SR_A design meets Unico engineering

The Big Bang Unico SR_A marks a new stage in a partnership that began in 2019, when Ross received the Hublot Design Prize. Since 2020, the designer and the Manufacture have developed three SR_A tourbillon editions defined by structural forms, engineered surfaces and industrial geometry; this watch applies those codes to Hublot’s core Unico platform.

The 42mm case in satin-finished and polished black ceramic revisits the modular construction and strong geometry of the Big Bang with a pared-back, monochrome look. A satin-finished black ceramic bezel is secured by six H-shaped black-plated titanium screws, while sapphire crystals with anti-reflective treatment front and back offer clear views into the movement and reinforce the technical character.

The honeycomb signature

The honeycomb motif is central to Ross’s contribution, a structural pattern seen in his sculptures and earlier SR_A editions, now expressed in a newly developed rubber strap. This black structured honeycomb strap, created expressly for the Big Bang Unico SR_A, is lightweight, ergonomic and architectural, echoing the industrial character of the series.

Water-resistant to 100m and measuring 14.50mm in thickness, the watch is secured by a black ceramic and black-plated titanium deployant buckle clasp and features Hublot’s “One-Click” system for fast strap changes. The all-black execution enhances the stealth impression while retaining practical, daily-wear performance.

The HUB1280 Unico, revealed

The matte black skeleton dial highlights the mechanical architecture of the HUB1280 Unico movement, with the column wheel at 6 o’clock and the open chronograph mechanism deliberately exposed. For Hublot, the Unico is both a power source and a defining visual signature, and the SR_A treatment accentuates that role.

The self-winding HUB1280 calibre combines a Swiss silicon lever escapement, 354 components and 43 jewels with a 4 Hz frequency and an approximate 72-hour power reserve. Its integrated flyback chronograph, precise to 1/8th of a second, allows instant reset and restart, and the movement incorporates several patented innovations, including dual oscillating clutches, an anti-trembling system and a “zero friction” ratchet wheel blocker; each movement is tested under the Chronofiable® protocol for performance and reliability.

Why it matters

The Big Bang Unico SR_A crystallises Hublot’s strategy of fusing industrial design, contemporary culture and technical watchmaking into a single, coherent object. By pairing Samuel Ross’s SR_A language with the Unico calibre in a 200-piece series, the Manufacture brings an avant-garde aesthetic into a more accessible Big Bang format, reinforcing its position at the crossroads of design innovation and high-performance chronograph engineering.

The Big Bang Unico SR_A is available at selected Hublot points of sale and online at hublot.com. For GCC collectors seeking curated news and access to limited editions, we invite you to connect with our editorial team and subscribe to our regional newsletter.