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.