Case in 18-carat rose gold with a finely fluted case band. Sapphire case back. 41 mm 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 on a sapphire disc. Breguet open-tipped hands in blued steel. Retrograde dates indication at 12 o'clock, days at 9 o'clock, and months and leap years at 3 o'clock. Small seconds on the tourbillon axis. Manually wound movement with tourbillon and perpetual calendar. Numbered and signed Breguet. Cal. 558QP2. 14 ½ lines, 21 jewels. Power reserve of 50 hours. Lateral lever escapement and balance with adjustment screws on a Breguet spring. Frequency 2,5Hz. Adjusted in six positions. Leather strap with a triple-blade folding clasp.
Also known as: Breguet 3797BR/1E/9WU, 3797BR1E9WU, 3797BR-1E-9WU