The Calatrava models represent everything that Patek Philippe is none for. The timeless design of the Calatrava is inspired by the fundamental idea brought to the world by the famous Bauhaus school of design: ""form follows function"". While always keeping within the bracing paradigm of its elegant, minimalist philosophy, the Calatrava brimmed with many aesthetically differentiating details through the decades, from dial styles to case sizes. But equally, the movements as well as the order of priorities in designing them have evolved and shifted tremendously. Notably, for Patek Philippe, these pursuits were achieved while maintaining a high degree of care in construction and an exceptionally refined aesthetic that has shaped the conception of a dress watch movement as we know today.