Rotonde de Cartier Mysterious Hour Skeleton 42 mm watch, Manufacture mechanical movement with manual winding, caliber 9983 MC. 18K pink gold case, 18K pink gold beaded crown set with a cabochon sapphire, pink gold steel sword-shaped hands. Dark gray semi-matte alligator leather strap (comes with an additional black semi-matte alligator leather strap), 18K pink gold interchangeable deployant buckle. Mysterious complication with mysterious display of the hour and minute hands, skeletonized bridges forming Roman numerals, 18K pink gold movement grid. Movement consisting of 181 parts including 27 rubies. Total movement diameter: 36.7mm, movement thickness: 6.15mm, balance: 28,800 vibrations/hour, power reserve approx. 48 hours. Sapphire crystal and case back. Case thickness: 11.9mm. Water-resistant up to 3 bar (approx. 30 meters/100 feet).