This technical feat is made possible by the manipulation of the pusher and crown. After setting the first city, the time and the date, all you need to do is set the second city. The mechanism then calculates the time and date using a clever system of cams, hammers and an integrated differential. By pressing the push-piece, it is possible to move from one end of the planet to the other, without disturbing the precise running of the watch. Aesthetically, the dial on this model, available in white or pink gold, offers an interpretation of the world map, constructed by superimposing different plates, notably in gold or sapphire.