Ballon Bleu de Cartier watch, 40 mm, mechanical movement with automatic winding, caliber 1847 MC. Case in 18K rose gold, fluted crown set with a cabochon sapphire, guilloché silver dial, blued steel sword-shaped hands, sapphire crystal, interchangeable brown alligator strap, interchangeable folding buckle in 18K rose gold, date window at window at 3 o'clock. Thickness 12.4 mm. Waterproof up to 30 meters.