Launched in 1956, the Day-Date made its debut as the first waterproof and self-winding chronometer wristwatch to offer a modern calendar with an instantaneous day display, spelt out in full in a window on the dial, in addition to the date. This watch has evolved true time when in 2015 at Basel world the new Day-Date 40 was presented. Together with the 'anniversary' green dial and the president bracelet in 18ct white Gold, this watch has a beautiful luxurious look without being too flashy.