Ballon Bleu de Cartier watch, 40 mm, Manufacture mechanical movement with automatic winding, caliber 1847 MC. 18K rose gold case, fluted crown set with a sapphire cabochon, dark gray sunray-brushed dial, 18K rose gold sword-shaped hands, sapphire crystal, interchangeable gray alligator leather strap, interchangeable 18K rose gold deployant buckle, calendar aperture at 3 o’clock. Thickness: 12.4 mm. Water-resistant up to 3 bar (approx. 30 meters/100 feet).