@iwcwatches: Watch Assembly of the IWC Ingenieur Perpetual Calendar 41 (Ref. IW344904) caliber 82600 base movement. The foundation of the Ingenieur Perpetual Calendar 41 Reference IW344904 begins with the inhouse manufactured 82600 caliber. IWC watchmaker Sabrina Herzog meticulously builds this high-end automatic movement, integrating the oscillating rotor and the robust Pellaton winding system with its wear-resistant ceramic components. The balance wheel, operating at 28,800 vibrations per hour (4 Hz) and providing a 60-hour power reserve, ensures precision. The movement's intricate finishing, including Geneva stripes and blued screws, underscores the technical craftsmanship inherent to IWC. #IWCschaffhausen #IWCwatches #Watches #IWC #Asmr