Housed in a 42mm cushion-shaped yellow ceramic case with a fixed ceramic bezel, the Spirit of Big Bang Yellow Magic is a testament to Hublot's work in advanced ceramic materials. The vibrant yellow hue is achieved through a specialized process that retains the material's characteristic hardness and scratch resistance, protected further by a scratch-resistant sapphire crystal above the dial.
The skeleton dial opens a direct view into the HUB4700 automatic movement — based on the Zenith El Primero calibre — with its column-wheel chronograph mechanism delivering chronograph, date, hour, minute, and second functions. Yellow hands move across index hour markers, maintaining legibility against the layered mechanical landscape beneath. A deployant buckle closes the strap securely at the wrist.
Reference 642.CY.011Y.RX is presented complete with its original box and papers, making it a well-documented example of this distinctive collection from Hublot's Swiss-made lineup.
