Engineered to redefine Cartier's place in haute horlogerie, the Calibre de Cartier 3578 launched in 2010 as the Maison's first men's collection powered by an in-house movement. The distinctive 42mm cushion case blends 18K rose gold and stainless steel, pairing a fluted rose gold bezel and crown set with blue spinel against a satin-brushed steel case and bracelet. Beneath sapphire crystal, the guilloche dial features Roman numerals and blue steel sword hands, while the automatic Calibre 1904-PS MC movement is displayed through the exhibition caseback. Hallmarked with Cartier signature, Swiss Made, and individual serial number, it embodies the Maison's dual mastery of fine jewelry and watchmaking, innovation forged into luxury.