Ballon Bleu de Cartier watch, 42 mm. Self-winding mechanical movement, caliber 1847 MC. Rose gold 750/1000 case, sink crown set with a sapphire cabochon and silver guilloche lacquered opal arrowhead. Sword-shaped blued steel hands. Sapphire crystal. Brown alligator strap with rose gold 750/1000 configurable butt buckle. The calendar window is located at 3 o'clock. Thickness: 13mm. Water resistant to 3 bar (approx. 30 meters/100 feet).