Honouring 250 Years Of Excellence: The Breguet Marine Hora Mundi 5555

Marking 250 years of watchmaking excellence, Breguet has introduced a special limited edition of its globetrotting timepiece, the Marine Hora Mundi 5555. Limited to just 50 pieces, this anniversary edition stands out for its sophisticated dual-time mechanism, exquisite artistic dial, and luxurious Breguet gold case — combining technical ingenuity with visual artistry.

A Three-Dimensional View of the World

The dial of the Marine Hora Mundi 5555 is a striking work of art, composed of two superimposed layers that create the illusion of a three-dimensional globe. The base dial is crafted in Breguet gold and decorated with a hand-guilloché pattern of meridians and parallels. Its colour gradually shifts from sky blue in the center to deep navy at the periphery, a gradient inspired by NASA’s “Black Marble” night view of Earth. Above it lies a translucent sapphire crystal dial, on which the continents are painted in miniature enamel on the reverse side, while their contours are pad-printed in Grand Feu enamel to add a sense of volume. Clouds are painted on the front of the sapphire disc and also receive a Grand Feu enamel treatment. Breguet has even developed a patent-pending phosphorescent enamel that lights up selected cities at night, producing an ethereal glow that differs from conventional Super-LumiNova.

Enhancing legibility, the watch features blued gold Roman numerals filled with subtle grey Super-LumiNova, as well as Breguet’s signature pomme-shaped hour and minute hands. The day/night indicator is adorned with a gold Sun featuring a radiant sunburst finish and a hand-hammered Moon, adding a poetic touch to the dial.

Breguet Gold Case and Finishing

The 43.90 mm case is fashioned from a special warm-toned Breguet gold, recalling the hues used by 18th-century watchmakers. It has a thickness of 13.80 mm and offers a reassuring 100 metres of water resistance, which is impressive for a watch of such mechanical complexity. The case is distinguished by Breguet’s signature fluted middle and polished central lugs, while the caseback bears a commemorative “Quai de l’Horloge” guilloché motif created specifically for the brand’s 250th anniversary. Through a sapphire crystal porthole, the wearer can admire the movement and its Breguet gold rotor. The finishing reflects the brand’s haute horlogerie standards, with Côtes de Genève, perlage, and finely beveled bridges.

A Dual-Time Marvel: Calibre 77F1

At the heart of the Marine Hora Mundi 5555 is the in-house automatic calibre 77F1, a patented system that redefines how world-time watches operate. Instead of using an additional GMT hand, it allows the wearer to pre-select two cities and instantly switch between their local times with a single press of the crown-integrated pusher at 8 o’clock. When activated, the central hour and minute hands perform an instant jump to display the selected time zone, while the date and the day/night indicator are simultaneously adjusted in perfect sync. This seamless functionality is possible thanks to its complex architectural mechanism. The movement beats at 4 Hz, offers a 55-hour power reserve, and features a silicon escapement that enhances resistance to magnetism and corrosion.

Straps, Availability, and Price

The Marine Hora Mundi 5555 is delivered in a red Moroccan leather presentation box and is paired with a navy blue alligator leather strap secured by a Breguet gold triple-folding clasp. An additional sporty rubber strap is also included. Only 50 individually numbered pieces will be produced, each offering the possibility to customise the city disc according to the owner’s preference. The watch is priced at CHF 88,000.

More information at www.breguet.com.

General Specifications:

Brand: Breguet

Model: Marine Hora Mundi 5555

Reference: 5555BH/YS/9WV

Dial: 18K gold base with blue gradient and painted in Grand Feu enamel

Case Material: 18k Breguet gold

Case Dimensions: 43.90 mm Diameter, 13.80 mm thickness

Crystal: Sapphire Glass

Case Back: Sapphire Glass

Water Resistance: 100 Meters

Strap: Navy blue Alligator leather strap with a 18k Breguet gold folding clasp

Caliber: 77F1

Dimensions: 36 mm Diameter, 6.13 mm thickness

Functions: Hours, minutes, seconds, date, day/night indicator, dual time zone

Winding: Automatic

Frequency: 4 Hz (28,800 Vph)

Jewels: 40

Components: 384

Power Reserve: 55 Hours

Price: CHF 88,000

Limited Edition: Yes, 50 numbered pieces