A ref. 405.035 Datograph Up/Down, the Second Generation of the storied Datograph. It brings contemporary proportions and updated design to A. Lange & Söhne's landmark chronograph. The First Generation Datograph inspired respect through its staggeringly beautiful movement design and finishing which has not changed, only made more practical with a reserve indication. Its calibre L951.6 comprises 451 components with improved endurance and accuracy to its predecessor. The Datograph Up/Down successfully revisited the legendary Datograph design with a more restrained and minimal dial, notable mechanical improvements, and Teutonically imposing proportions.