Breguet Classique “Grande Complication” Tourbillon Extra-Thin Automatic 5377 case in platinum with a finely fluted caseband. Sapphire-crystal caseback. 42mm diameter. Welded lugs with screw bars. Water resistant to 3 bar (30m). Dial in 18-carat gold, silvered and engine-turned in four different patterns. Individually numbered and signed BREGUET. Hours chapter with Roman numerals. Breguet open-tipped hands in blued steel. Self-winding extra-thin Tourbillon movement. Small seconds on the Tourbillon. Numbered and signed Breguet. Cal. 581DR, 16 lignes, 42 jewels. Power reserve of 90 hours with an indicator at 8:30. Barrel on roller bearings. Lateral lever escapement in silicon and anti-magnetic steel. Silicon balance spring. 4Hz frequency. Adjusted in six positions.
Leather strap with a triple-blade folding clasp.