Rotonde de Cartier Annual Calendar watch, 40 mm, Manufacture self-winding mechanical movement, caliber 9908 MC. 18K rose gold case, 18K rose gold beaded crown set with a blue cabochon sapphire, white guilloché galvanic dial, blued steel sword-shaped hands, hammer-shaped hands with red ends. Brown alligator skin strap, double adjustable folding buckle in 18K pink gold. Annual calendar complication with indication of the days through a hammer-shaped hand and indication of the months through a disc, large date window at 12 o'clock. Movement made up of 291 components and 32 jewels. Movement diameter 30 mm, thickness 5.9 mm, balance wheel at 28,800 vibrations / hour, power reserve of approximately 48 hours. Sapphire crystal and case back. Thickness 13.26 mm. Waterproof up to 30 meters.