Discover Hublot's precision with the Spirit of Big Bang (ref. 601.CI.7170.LR), a contemporary classic shaped by careful watchmaking know-how. The exterior is thoughtfully executed: 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. At a glance, the dial balances texture and clarity: a skeleton tone, framed by stick / dot hour markers, and stick hands. At its heart beats a proven engine: the HUB4700 caliber. With considered ergonomics, it feels composed during extended wear. Brushed and polished elements play with light to emphasize crisp geometry. For buyers researching specifications and real-world impressions, this reference stands out for coherent design, dependable mechanics, and lasting relevance within modern horology.