Hublot Spirit of Big Bang 42mm King Gold Watch 641.OX.7180.LR

The Hublot Spirit of Big Bang King Gold 42mm (Ref. 641.OX.7180.LR) presents the distinctive barrel-shaped Big Bang Spirit case in Hublot’s proprietary King Gold alloy, a platinum-enriched formulation that produces a warmer tone than conventional 5N 18K gold whilst lending itself to the combination of polishing and satin finishing visible across the case and bezel. The six H-shaped titanium screws securing the satin-finished, polished, and microblasted King Gold bezel are the defining visual signature connecting this to the broader Big Bang family.

At 42mm in the tonneau-shaped Spirit case through satin-finished and polished King Gold construction, this provides refined precious metal presence in a format that wears more elegantly than the round Big Bang whilst the fully skeletonised sapphire dial reveals the HUB4700 movement architecture throughout. The sapphire dial and caseback create a transparency-first presentation appropriate to the skeletonised movement beneath.

The HUB4700 self-winding skeleton chronograph movement delivers 50-hour power reserve through a direct successor to the legendary El Primero calibre, originally the first integrated automatic chronograph in 1969 with 5Hz frequency for 1/10th second accuracy, here updated with silicon regulating elements for enhanced precision and reliability. The skeletonisation throughout the movement allows visual appreciation of the chronograph architecture.

The blue structured lined rubber strap with 18K King Gold and blue PVD titanium deployant buckle clasp creates material contrast appropriate to Hublot’s Art of Fusion philosophy whilst the 100m water resistance covers practical daily requirements. King Gold’s platinum content provides superior scratch resistance compared to conventional gold alloys, maintaining the case finish over extended wear.