This replica big bang 1170 black presents the 421.NM.1170.RX, a Big Bang built around a black dial and matching rubber strap on a case that uses Hublot’s proprietary titanium-composite construction. The 421.NM reference code signals a specific material combination where the “N” denotes titanium and the “M” indicates micro-blasted surface treatment, resulting in a muted gunmetal tone that sits between the brightness of polished steel and the depth of black ceramic. At its standard Big Bang dimensions, this version maintains the familiar proportions while the material choice shifts the overall character toward understated functionality.

Build Details

• Case material: titanium, micro-blasted finish
• Reference: 421.NM.1170.RX
• Dial: matte black with applied luminous indices
• Bezel: titanium with six H-shaped screws
• Crystal: sapphire with anti-reflective coating
• Strap: black rubber, integrated lug attachment
• Movement: automatic
• Crown: screw-down

Titanium runs roughly forty percent lighter than stainless steel at comparable dimensions, and the micro-blasted surface hides fingerprints and minor contact marks more effectively than any polished finish.

What Collectors Notice

The titanium Big Bang occupies a specific niche between the entry-level steel versions and the high-end ceramic or gold models. Collectors who have handled multiple Big Bang references immediately recognize the weight difference when picking up a titanium version. The 421.NM also presents a different bezel tone under varying light, reading warmer than ceramic but cooler than steel. The 411.OM.1180.RX Unico in gold shows the opposite end of the material hierarchy within the same case design. Both reside in the Big Bang collection, separated primarily by material philosophy.

This vs Other Versions

If the choice is between steel, ceramic, and titanium for a daily Big Bang, the titanium version wins on comfort over extended wear sessions. The reduced mass means less fatigue on the wrist across a full day without sacrificing any of the visual presence that the 44mm case provides. Black-dial Big Bangs remain the most versatile option in the series because they pair with nearly any strap color if you decide to swap later. This replica big bang 1170 black delivers the material advantage of titanium within the most wearable color configuration available.