Breguet Type XX Steel — Flyback Chronograph Transatlantique | Ref. 3810ST/92/9ZU

Aviation chronographs exist on a spectrum from decorative homage to functional instrument, and the Breguet Type XX Transatlantique 3810 occupies the rigorous end of that spectrum without compromise. Born of the maison's long relationship with the French Aéronavale — for whom the original Type XX was supplied in the 1950s — this stainless steel reference maintains the operational DNA that earned its predecessors a place in the cockpits of French naval aircraft. The 42.5 mm case, 15.4 mm thick, is built to absorb punishment: the solid caseback and screw-locked crown speak a language of sealing and resilience rather than ornament.

Calibre 584 Q is the mechanical heart of the 3810, delivering a flyback chronograph function that enables the pilot — or the collector who understands why flyback matters — to reset and restart the elapsed-time register with a single press rather than the conventional three-step sequence. In the air, those saved fractions of a second are operationally meaningful; at ground level, the mechanism remains a testament to purpose-driven engineering. The ruthenium dial, finished in a dark, almost graphite tone, offers maximum legibility against its Arabic numeral hour markers and the date window positioned at six o'clock, while the tachymetre-style bezel frames the subdials with geometric authority.

With approximately 48 hours of power reserve and water resistance to 100 metres, the 3810 is built to function beyond the occasions most watches are designed for. A brown alligator strap with deployant buckle anchors the watch to the wrist with field-ready security. For the collector drawn to instrument watches with provenance, the Type XX Transatlantique is the Breguet that is least concerned with impressing and most concerned with performing — which, paradoxically, makes it one of the most impressive in the entire catalogue.