How does the instant-jump time-zone display system works?

For example, assume it is 4 pm in Paris on the 25th of the month. Rotating the combined crown/pushpiece reveals “Paris” in the window at 6 o’clock, then the crown at 3 o’clock is used to set the hands to 4 o’clock and the date to 25, taking care that the day/night indicator shows the sun. For quick display of the local time in Sydney, the crown/pushpiece is first rotated to bring up the name of the Australian city in the window at 6 o’clock; the watch then automatically sets itself to Sydney time. Since the difference in time is nine hours, the hour hand will move forward by nine hours. At the same time, the date will change to the 26th and the day/night indicator will turn to show the moon. When it is 4 pm in Paris, it is in fact 1 am the next day in Sydney. Once the watch has been preset, the double instant-jump time-zone display system will simultaneously change all the indications – hour, date and day/night – in a coordinated way from Paris time to Sydney time when the wearer simply presses on the crown/pushpiece.
Three variations of the Hora Mundi watches are available and each of them depicts one part of the globe: the European and the African continent, the Americas, or Asia and Oceania. This amazing Breguet watch features a 44 millimeters wide platinum or 18-carat red gold case or 950 platinum, 13.55mm thick.voir plus montre replica et Rolex YachtMaster II