Rotonde de Cartier Day and Night watch, retrograde moon phases, 43.5 mm, Manufacture mechanical self-winding movement 9912 MC. Case in 18K pink gold, beaded crown in 18K pink gold set with a blue sapphire cabochon, white galvanized guilloché dial, silvered grid with transferred black Roman numerals, apple-shaped minute hand in blued steel, retrograde moon-phase hand in the form of a lunar crescent in blued steel. Strap in brown alligator skin, double adjustable folding buckle in 18K pink gold. Complication indicators day and night with retrograde moon phases. Individually numbered movement containing 290 parts including 44 jewels. Total diameter of movement: 30 mm, thickness: 6.44 mm, balance: 28,800 vibrations/hour, power reserve approx. 48 hours. Sapphire crystal and case back. Case thickness: 12.77 mm. Water-resistant to 3 bar (30 meters/100 feet).
The Rotonde de Cartier collection showcases the most advanced movements in Cartier Fine Watchmaking: the Astrorégulateur, minute repeater, Astrotourbillon and skeleton grande complication.