Hublot Big Bang Unico Chronograph Rainbow 42mm

About this reference

The Hublot Big Bang Unico Chronograph Rainbow 42mm (Reference 441.OX.9910.LR.0999) entered production around 2019 and remains a centerpiece of the brand’s contemporary catalog. Collectors target this reference for its complex gem-setting, featuring 166 colored gemstones on the 18k King Gold case and 108 gemstones on the bezel, including rubies, pink sapphires, amethysts, and blue topazes. It utilizes the in-house HUB1280 Unico manufacture movement, a self-winding flyback chronograph with a 72-hour power reserve and a visible column wheel on the dial side. The 42mm diameter offers a more wearable profile than the original 45mm version. On the secondary market, this model typically trades between $65,000 and $85,000 depending on condition and completeness. A notable production detail is the "King Gold" alloy, which uses platinum to ensure the red hue remains stable over years of exposure to the elements.