Ballon Bleu de Cartier watch, 40 mm, Manufacture mechanical movement with automatic winding, caliber 1847 MC. Rose gold 750/1000 case, fluted crown set with a sapphire cabochon, dark gray sunray-brushed dial, rose gold 750/1000 sword-shaped hands, sapphire crystal, interchangeable gray alligator leather strap, interchangeable rose gold 750/1000 deployant buckle, calendar aperture at 3 oclock. Thickness: 12. 4 mm. Water-resistant up to 3 bar (approx. 30 meters/100 feet). Floating like a balloon and as blue as the cabochon safely nestled in its side, the Ballon Bleu watch by Cartier adds a dash of elegance to male and female wrists alike. Roman numerals are guided on their path by a deep blue winding mechanism. With the convex curves of the case, guilloché dial, sword-shaped hands, and polished or satin-finish links of the bracelet...the Ballon Bleu watch by Cartier floats through the world of Cartier watchmaking.