The Hublot Big Bang Original Gold Ceramic Chronograph (Ref. 301.PB.131.RX) is a luxury Swiss timepiece that embodies Hublot's signature "Art of Fusion". It pairs a substantial, multi-component 18K rose gold case with a polished black ceramic bezel. This high-contrast aesthetic creates a bold, sporty presence on the wrist.

• Case & Material: 44mm solid 18kt rose gold (satin and polished finishes) with lateral black Kevlar inserts on the case edges. 

• Bezel: Polished black ceramic featuring a ridged edge and the iconic 6 H-shaped titanium screws. 

• Dial: Distinctive black stamped "carbon fiber" effect checkerboard pattern, complemented by applied rose gold Arabic numerals and indices. 

• Strap: High-comfort black structured lined rubber strap paired with an 18K red gold and black PVD stainless steel deployant buckle clasp.

Specification	Details
Movement	Hublot Caliber HUB4100 (Automatic/Self-winding)
Power Reserve	Approximately 42 hours
Complications	Chronograph stopwatch functions, running small seconds, and a date window (positioned between 4 & 5 o'clock)
Frequency	28,800 vibrations per hour (vph) / 4 Hz
Water Resistance	100 meters (10 ATM)
Crystal	Scratch-resistant sapphire with anti-reflective treatment
Case Back	Transparent sapphire exhibition case back