Rotonde de Cartier Day Night retrograde moon phase watch, 40 mm, Manufacture mechanical movement with automatic winding, 9912 MC. 18K pink gold case, 18K pink gold bezel set with 68 brilliant-cut diamonds totaling 0.99 carats, 18K pink gold and mother-of-pearl dial set with 118 brilliant-cut diamonds totaling 0.29 carats and 28 orange sapphires, 18K pink gold beaded crown decorated with one diamond of 0.12 carats, pink-finish steel sword-shaped minute hand, pink-finish steel retrograde moon phases shaped like the moon. Brown semi-matte alligator-skin strap, 18K pink gold double adjustable folding buckle set with 43 diamonds totaling 0.42 carats. Day and night indication complication with retrograde moon phases. Individually numbered movement consisting of 290 parts including 44 jewels. Total movement diameter: 30 mm, movement thickness: 6.44 mm, balance: 28,800 vibrations/hour, power reserve approx. 48 hours. Water-resistant to 3 bar (approx. 30 meters). Limited edition of 30 individually numbered pieces.