Cartier Rotonde de Cartier Mysterious Hour Skeleton 42 Mm Watch - 42 mm Pink Gold Case - Skeleton Dial - Dark Gray Leather Strap - WHRO006042 mm 18K pink gold case, 11. 9mm thick, sapphire crystal back, 18K pink gold beaded crown set with a cabochon sapphire, sapphire crystal, skeleton dial, caliber 9983 MC manual movement, approximately 48 hours of power reserve, dark gray semi matte alligator leather strap, 18K pink gold interchangeable deployant buckle. Water resistant to 3 bar (approx 30 meters 100 feet).