This replica big bang 1170 showcases the 421.CI.1170.RX, a black ceramic Big Bang Unico that wraps Hublot’s chronograph movement inside a 44mm case made entirely from micro-blasted ceramic. The material choice matters here because ceramic resists scratching in ways that steel and titanium simply cannot match, and the uniform matte-black surface eliminates the visible wear marks that accumulate on metal cases over months of daily use. The Unico designation signals this is a chronograph variant with the brand’s in-house caliber architecture, distinguishable on the dial by the flyback chronograph layout with running seconds at nine and elapsed minutes at three.

Key Specifications

• Case diameter: 44mm
• Case material: black ceramic, microblasted
• Reference: 421.CI.1170.RX
• Bezel: black ceramic with titanium H-screws
• Dial: skeleton-style with visible movement architecture
• Crystal: sapphire, scratch-resistant
• Strap: black structured rubber with deployant clasp
• Functions: chronograph (flyback), hours, minutes, seconds, date

Ceramic cases require specialized machining that produces extremely precise tolerances, resulting in tighter fits between the bezel, middle case, and caseback.

Design & Finishing

The skeleton dial on the 421.CI reveals layers of the movement through cut-out sections, turning the time-display surface into a showcase for internal mechanics. The black-on-black palette means all visual interest comes from depth and texture rather than color contrast. The ceramic bezel retains the six H-shaped screws in titanium, providing the only metallic accent point on the entire watch head. For a gold-toned alternative within the Unico family, the 441.OX.1180.RX.1704 in King Gold demonstrates how the same skeleton architecture reads under warmer materials. Both belong to the Big Bang collection but deliver opposite aesthetic statements.

On the Wrist

Ceramic at 44mm produces a surprisingly light watch compared to steel equivalents. You notice the weight difference immediately when switching from a metal Big Bang to this version. The matte-black surface also means the watch recedes visually against dark clothing, functioning as a stealth piece rather than a conversation starter. If your preference leans toward technical material over precious metal, this is the Big Bang variant that aligns with that priority. This replica big bang 1170 puts the emphasis on material innovation rather than surface ornamentation.