This replica big bang 1170 44mm carries the 301.SX.1170.RX reference, a straightforward steel-on-steel Big Bang that strips away the color experiments and mixed metals to deliver the core Hublot design in its most wearable form. At 44mm the case hits the original Big Bang sizing that launched in 2005, before the line expanded into 42mm and 45mm variants. The satin-brushed steel case with polished bevels on the lugs and bezel screws gives this version a balanced finishing that works equally across casual and semi-formal contexts. The black dial with luminous applied markers provides clean legibility without visual clutter.

Technical Overview

• Case diameter: 44mm
• Case material: stainless steel, satin-brushed
• Reference: 301.SX.1170.RX
• Bezel: steel with six H-shaped screws
• Dial: matte black with applied luminous indices
• Crystal: sapphire flat with AR coating
• Strap: black rubber with steel deployant
• Movement: automatic

The 1170 designation in Hublot’s system points to the black composite rubber strap variant, distinguishing it from leather or bracelet options on the same case platform.

Inside the Movement

The automatic caliber inside the 301.SX handles time and date functions through a conventional layout visible on the dial as a date window at the three-o’clock position. Power reserve sits in the standard range for movements of this class. The screw-down crown provides resistance against accidental adjustment and maintains the case’s water resistance rating. Compare this steel execution against the 301.PX.130.RX in rose gold to see how the same case geometry shifts dramatically with material changes. Both represent the Big Bang range but at opposite ends of the visual spectrum.

What Sets It Apart

Full-steel Big Bangs serve as entry points into the collection for people who want the architectural case design without precious-metal weight or contrast-color risk. The 301.SX.1170.RX does not demand attention through color or material shock. Instead, it relies on the Big Bang’s signature shape, the H-screw bezel, and the integrated rubber strap to make its case. This replica big bang 1170 44mm is the version you reach for when the design itself needs to do the talking.