Breguet Marine Hora Mundi World Time 3700BB

Opening Context
The Marine collection represents Breguet’s more sporting interpretation of its classical watchmaking language, combining the Maison’s traditional guilloché, Roman numerals and signature hands with cases designed for a more contemporary setting. The Hora Mundi 3700 takes that idea further by introducing a travel-focused display without abandoning the unmistakably Breguet character of the dial.
Reference 3700BB places that functionality within an 18K white gold case measuring approximately 38.7 mm, giving the watch a notably restrained footprint compared with many modern complicated travel watches.

Why This Reference Matters
The appeal of the 3700 lies in how naturally its additional information is incorporated into a traditional Breguet dial. The silver guilloché surface, Roman numerals and classical hands establish the familiar foundation, while the rotating city ring and 24-hour indications give the watch its more technical personality. The date at 6 o’clock adds useful everyday functionality without overwhelming the overall composition.
The reference uses a distinctive double-crown arrangement to manage its time and travel indications, allowing the wearer to work with different time zones through the rotating inner city display. Period examples are documented with 24 international cities around the dial, making the complication visually engaging as well as practical.
Inside is the automatic Calibre 563, a 25-jewel movement operating at 4 Hz and offering approximately 38 hours of power reserve.

On the Wrist
At roughly 38 mm, the Marine Hora Mundi wears with the proportions of a traditional complicated Breguet rather than an oversized sports watch. The white gold case gives it reassuring weight, but visually it remains discreet, particularly against the silver dial and black leather strap.
What gives the watch presence is not its diameter but the amount of information contained within the dial. The city ring and 24-hour scale reward closer inspection, while the guilloché surface ensures the watch still feels unmistakably rooted in classical Breguet design. The black leather strap with white gold folding clasp reinforces the more formal side of the Marine character.
It is a useful balance: sufficiently complicated to feel distinctive, yet compact enough to retain the elegance expected from the Maison.

Condition & Transparency
This example is presented on a black leather strap with an 18K white gold folding clasp. Specific information regarding case condition, polishing history, dial and hand condition, crystal, strap condition, box and papers, and previous servicing has not been provided. These details should therefore not be assumed and should be confirmed as part of the individual watch assessment.

Why It Belongs in a Collection
The Marine Hora Mundi 3700 suits a collector who wants a travel complication without moving away from traditional watchmaking aesthetics. Its appeal is quite different from that of a modern technical world timer: the complication is presented through guilloché, Roman numerals and precious metal rather than an overtly contemporary design language.
Within a broader collection, it also offers an interesting alternative to simpler Breguet dress references. There is considerably more happening on the dial, yet the watch still maintains the proportions and visual refinement associated with the brand. For collectors who travel or simply enjoy mechanically expressed geography, that combination gives the 3700 a clear place of its own.

Closing
The Breguet Marine Hora Mundi 3700BB brings together two sides of the Maison particularly well: traditional decorative watchmaking and useful mechanical complication. White gold, a guilloché dial, rotating city display and the automatic Calibre 563 create a watch with genuine functionality without losing the elegance that makes a Breguet immediately recognisable.

Specifications

• Case Size: 38 mm
  
• Material: 18K White Gold
  
• Dial: Silver Guilloché Dial with Roman Numerals, World Time City Ring, 24-Hour Scale and Date Aperture at 6 O’Clock
  
• Strap: Black Leather Strap with 18K White Gold Folding Clasp
  
• Power Reserve: 38 Hours
  
• Movement: Automatic (Calibre 563)
  

Shipments are delivered under Delivered Duty Unpaid (DDU) terms, with duties and taxes payable by the recipient.