Behind the night-time dial of the Marine Hora Mundi 5555 lies the calibre 77F1, a patented movement with mechanical memory. Linked to 24 cities, it allows instant switching between two time zones and their corresponding dates, with a single press of the pusher at 8 o’clock. Cams, hammers, differential gears: each element plays a role in calculating and displaying local and travel time. A rare feat in contemporary watchmaking. Invisible from the dial, but felt at every click. Discover the new Mar