Self-winding chronograph movement, with “flyback” function. Numbered and signed Breguet. Cal. 584Q/2. 13 1/2 lignes, 26 jewels. 48 hours power reserve. Inverted in-line Swiss lever escapement with silicon pallets. Silicon balance-spring. Balance frequency 4Hz. Adjusted in 6 positions.
Day/night indicator at 3 o’clock. 12-hour totalizer and date at 6 o’clock. Small seconds at 9 o’clock. Central minute totalizer.