User friendliness is the chief asset of the Worldtimer watch developed and produced by the Manufacture Frédérique Constant. The simultaneous display of the 24 time zones, via the two rotating discs showing 24 cities and 24 hours with day/night indication, is controlled by a single crown. Once the setting has been made, the numerals representing the various hours of the world are displayed in a highly visible manner opposite the corresponding reference cities. The central hands indicate the time of the given city at 12 o’clock on a dial available in two versions: silver-toned with a globe motif and round hour-markers; and silver-toned with a guilloché centre and Roman numerals – each complemented by the date function. The two variations, presented in a 42 mm-diameter steel case and driven by a self-winding calibre visible through a sapphire crystal case-back, are each issued in a 1,888-piece limited edition.