At 45mm, this replica big bang 1117 45mm builds on the Unico platform with a titanium case and a multi-colored gemstone bezel, carrying reference 411.NX.1117.LR.0999. The NX in the reference signals titanium, Hublot’s lightest case metal for the Big Bang line. The 0999 suffix indicates the rainbow sapphire bezel configuration, where graduated colored stones transition across the full circumference. The result is one of the most visually dramatic entries in the entire Big Bang catalog, combining the Unico skeleton dial with a bezel that shifts through the color spectrum.

Key Specifications

• Case diameter: 45mm
• Case material: satin-finished titanium
• Bezel: titanium set with graduated rainbow-colored sapphires
• Crystal: sapphire with anti-reflective coating
• Dial: skeleton with visible Unico chronograph components
• Strap: black rubber with titanium deployment buckle
• Movement: Unico automatic flyback chronograph
• Functions: hours, minutes, flyback chronograph, date, column wheel visible

Titanium reduces the case weight substantially compared to steel or gold variants. At 45mm, that weight savings translates directly into comfort during extended wear.

Design & Finishing

The rainbow sapphire bezel uses individually selected stones arranged in a gradient from red through orange, yellow, green, blue, and violet. Each stone is cut to fit the bezel channel precisely, maintaining consistent height across the full ring. The titanium case beneath has a matte satin finish that deliberately avoids competing with the bezel for visual attention. The skeleton dial keeps the focus on the Unico column wheel at 6 o’clock and the chronograph coupling at 12. For a comparison without the gemstone element, the Sang Bleu II Blue 418.EX.5107 offers a different artistic approach on titanium. Both highlight how versatile the Big Bang platform can be when pushed beyond conventional watch design.

On the Wrist

Wearing a rainbow bezel at 45mm is a deliberate choice. The titanium case keeps weight manageable despite the visual volume, and the black rubber strap grounds the look against the multicolored bezel. Under direct sunlight each sapphire throws a different color, creating a constantly shifting appearance as your wrist moves. The hublot big bang unico platform beneath all that color remains a serious chronograph with flyback function, column wheel, and 72-hour reserve. This replica big bang 1117 45mm pairs that mechanical substance with a gemstone presentation few other references can match.