Breguet Marine 5817ST/92/5V8
Case in 950 platinum with a delicately fluted caseband. Sapphire-crystal caseback. 42mm diameter. Welded lugs with screw bars. Water resistant to 10 bar (100m).
Dial in gold with a matt black surface, engine-turned. Individually numbered and signed Breguet. Hours chapter with luminescent dots and Roman numerals. Central chronograph seconds and minutes counter. Date at 6 o’clock. Breguet open-tipped and faceted hands 18-carat gold with luminous material.
Self-winding movement, numbered and signed Breguet. Cal. 583Q/1. 133/4 lignes, 24 jewels. 48 hours power reserve. 18-carat gold engine-turned rotor, two-tone black/rhodiumed. Inverted in-line lever escapement with silicon pallets. Annular balance on a flat spring. Balance frequency 4Hz. Adjusted in six positions.