The names of the cities are printed in green on the corresponding disk. The green dial center illustrates the mastery of fine craftsmanship skills with a circular hand-guilloched circular pattern. The World Time function, on the other hand, simultaneously displays the time in 24 time zones. Moreover, when the wearer changes the time zones, an exclusive patented mechanism enables correction of all displays by pressing the 10 o’clock pusher, without affecting the accuracy of the movement.