The Unico 2 caliber was designed to equip smaller chronographs and also open the world of Hublot to new enthusiasts. It retains the unique design of its former version with a double coupling system visible from the dial side as well as a 72-hour power reserve. But thanks to various technical optimizations, including the introduction of a new, flatter automatic winding system, it has been reduced by 1.3 mm in thickness. Scratch-proof gold had never existed before, so Hublot invented it. Developed and patented by the Manufacture, Magic Gold is the first and only 18K gold alloy in the world that perfectly withstands scratches, even with an extremely active lifestyle. It maintains its beauty, shine and polished appearance over time. A true revolution in the world of precious materials.