From Hublot, presenting the Spirit of Big Bang (ref. 601.CI.0173.RX), an elegant watch engineered for daily versatility and long-term reliability. From profile to crystal, the architecture convinces: measuring 45 mm in diameter, defined by a tonneau silhouette. The caseback is open, and the crystal is sapphire, delivering water resistance to 10000 meters. Up close, the dial rewards inspection: a skeleton tone, framed by stick / dot hour markers, and stick hands. Inside, precision takes center stage: the HUB4700 caliber. Designed for real-world wear, the watch transitions smoothly from tailored looks to casual settings. Manufacturing tolerances and surface treatment highlight consistent quality control. For buyers researching specifications and real-world impressions, this reference stands out for coherent design, dependable mechanics, and lasting relevance within modern horology.