This model comes in a 45mm tonneau-shaped titanium case with a diamond-set bezel, giving it a strong modern profile without losing the signature Hublot identity. Inside, it runs the HUB4700 automatic skeleton chronograph movement — and this is important — it is originally based on the legendary El Primero calibre. That heritage gives the watch high-beat performance, proven reliability, and a direct link to one of the most iconic chronograph movements ever made. The skeleton dial shows off the movement architecture, while the luminescent hands and indices keep it practical and easy to read. It’s water-resistant to 100 meters and comes paired with a comfortable black alligator-rubber strap.

A few interesting facts: the Spirit of Big Bang line was introduced in 2014 as a reinterpretation of Hublot’s design language in a curved tonneau case, giving the brand a new silhouette while keeping its “Art of Fusion” identity. This particular combination of titanium, diamonds, and a skeletonized El Primero-derived movement is a perfect example of Hublot blending modern materials with mechanical heritage.

Model – Spirit of Big Bang
Reference – 601.NX.0173.LR.1104
Year –
Size – 45mm
Dial – Skeletonized
Case Material – Titanium
Bracelet Material – Rubber
Movement – Automatic
Power Reserve – 50hrs
Water resistance – 100m
Condition – 8/10
Accs – Watch Only
Remarks –