The Classique Hora Mundi by Breguet is the first mechanical timepiece with an instant-jump time-zone display system with synchronised date, day/night and city indications. Today, the dial of this 2016 edition features a “clou de Paris” hobnailing motif entirely hand-crafted on a silvered gold dial. Its single pair of hands is linked to a mechanical memory and capable of keeping track of the time in two time zones. It is thus possible to adjust the time both in one’s place of residence and in another place in the world.