Breguet presents a new iteration of the Hora Mundi, this time adding it to the Breguet Marine. The new Breguet Marine Hora Mundi ref. 5557 helps you travel at a click. The Hora Mundi became an instant hit at the time of its launch in the Classique collection. This mechanical watch, which had taken three years to develop and been awarded four patents, featured a critical asset in the shape of an instant-change dual-time display.