Case in 18-carat white gold with a delicately fluted caseband. Sapphire-crystal caseback. 43mm diameter. Welded lugs with screw bars. Screw-locked crown at 3 o’clock. Pushpiece-crown at 8 o’clock. Water-resistant to 3 bar (30m). Dial in silvered 18-carat gold, engine-turned. Individually numbered and signed Breguet. Hours chapter with Roman numerals. 24-hour indicator between 3 and 4 o’clock. City indication at 6 o’clock. Date aperture at 12 o’clock. Breguet open-tipped hands in blued steel. Self-winding movement, numbered and signed Breguet. Instant time-zone jump with synchronised date, 24-hour and city indications. Cal. 77F0 composed of base Calibre 777 with additional plate. 12 lignes. 39 jewels. 55 hours power reserve. Inverted in-line Swiss lever escapement with silicon pallets. Balance-spring in silicon. Balance frequency 4Hz. Adjusted in 6 positions. Leather strap.
Also available in 18-carat rose gold: Reference 5727BR/12/9ZU