Breguet is celebrating their 250 anniversary with style, by launching an amazing watch – Breguet Marine Hora Mundi 5555.
For me, this watch is amazing because it combines two things I really enjoy and like, watches and Maps.
Marine Hora Mundi 5555 it’s limited to 50 pieces, I don’t know why 50 pieces, they didn’t mention this, but i think it would have been better if the model was limited to 250 pieces, you know… to mark 250 years. But probably wouldn’t cost that much.
I assume it’s a pricey watch, because Breguet hasn’t specified the price for this model .
In 2025 another important watch brand, Vacheron Constantin , celebrated their anniversary by launching two amazing models: La Quete du Temps – a clock that weighs around 250 kilograms and it was exposed at Louvre in Paris.
And Tribute to the Quest of Time, a watch for your hand this time that borrows designs and the astronomer from the clock.
Breguet Marine Hora Mundi 5555-Between Sky and Sea
At least this is what they say in the presentation. But one thing caught my eye-the craftsmanship of the dial, two superimposed levels, one guilloche and the other sapphire in order to create something that resembles the Iconic picture from NASA, the black marble.
The even nicer thing is, when the lume comes to life, it ignites the dial, the continents and it looks like you are watching the city lights from space. Like a reminder that the world never sleeps.
As I’m writing this I’m getting even more excited about this watch. Like I said, it’s a watch and has world map…love it.
Also it’s fair to mention that Hora Mundi 5555 comes for the first time in Breguet Gold.
Dial
The dial looks amazing but the cool part is that they used phosphorescent enamel to decorate the dial and they will patent this technology.
If you are lucky enough to be one of the 50 people that will have this watch, you can choose to personalize the cities assigned to the 24 time zones. I think this is a nice touch, and you can make your watch more unique.
The Superimposed dials
By using this technique it gives the dial a rounded effect and it’s based on two elements On the one hand the base has a gold dial decorated with a gradation from sky blue to navy blue-from which the “ between sky and sea” catchphrase.
The base is hand-made guilloche with meridians and parallels which gives the optical illusion of curvature of the Earth.
Second component is depth – and this is obtained by adding on top a translucent sapphire crystal dial which creates the illusion of a viewpoint from space as if the owners of this watch are observing the Earth from the thermosphere
The sapphire dial then it’s hand-painted in three phases on both sides. First , the continents are painted in miniature enamel, and because the sapphire crystal is also flat the contours of the continents are refined as they approach the flange, transferred by pad printing in transparent petit feu enamel.
The Breguet craftsmen apply enamel within these lines and it is a delicate exercise because the artists from Breguet need to paint the continents in an inverted mirror so that they appear correctly once the sapphire crystal is placed right side up on the dial.
It’s worth mentioning that the layer of enamel paint is first fired at a very high temperature.
After the process of adding enamel paint in high temperature, the craftsmen turn the sapphire dial inside out and paint a series of clouds on the front bringing a little realism to the composition.
This cloudy layer is also executed in enamel paint. Then again with the great fire (or grand feu as the french say) applying enamel. While the continents look the same on each watch, the clouds fluctuate-just like the real clouds are floating above the continents.
Another thing that makes each watch unique, is the fact that each craftsman has the room for personal creativity when it comes to adding the clouds. So you can choose the cities, and each craftsman will design the clouds freely. Guaranteed you will not see two Breguet Marine Hora Mundi 5555 looking the same.
Marine Hora Mundi 5555 Calibre
Of course, like other models from Marine Hora Mundi collection, this model too comes with the 77F1 caliber, which has a 55 hours reserve. In addition to the time and date, it indicates a second time and date pair for the time zone you choose, based on the 24 cities each representing a time zone.
The way that this works is amazing, and truly a Breguet thing, it is based on the principle of mechanical memory with instantaneous display. After you set the time and date at the crown positioned at 3 o’clock in relation to the first city, you simply set the second city and its time zone with the push-button crown positioned at 8 o’clock.
Then the mechanism calculates the time and date by means of cams, hammers and integrated differential. By pushing the button from the 8 o’clock position the display switches between two time zones setted by you. Also it automatically adjusts the date.
The display indicator which is positioned at 4 o’clock specifies if the time is in the day or night zone.
The calibre 77F1 is patented. One is for dual-time zone mechanism, the second to display a time zone on demand via the main pointer and the third for the programmable and reprogrammable mechanical memory wheel for a timepiece. And the fourth for displaying a time dimension via a trailing hand.
This watch might just be the dream watch for me. Of course based on the other models from Marine Hora Mundi, this one might cost more than 100.000 dollars/pounds/euro.
A truly mechanical masterpiece.
| Specification | Details |
|---|---|
| Model | Breguet Marine Hora Mundi 5555 |
| Collection | Marine |
| Movement | Calibre 77F1, mechanical self-winding |
| Functions | Instant time-zone change, synchronized date, day/night, and city indication |
| Case Material | Breguet Gold |
| Case Diameter | 43.9 mm |
| Case Thickness | ~13.8 mm |
| Water Resistance | 100 m (10 bar) |
| Dial | Hand-guilloché dial , sapphire dial |
| Crystal | Sapphire crystal (front and case back) |
| Strap | Alligator leather, Rubber |
| Power Reserve | 55 hours |
| Frequency | 4 Hz (28,800 vibrations/hour) |
| Special Feature | “Hora Mundi” patented instant dual-time display with memory wheel system |
| Hands | Breguet open-tipped, luminescent |
| Indexes | Applied Roman numerals, luminescent |
