Ballon Bleu de Cartier watch
Ballon Bleu de Cartier chronograph watch, 44 mm, Manufacture self-winding mechanical movement, 1904-CH2 calibre. 18K rose gold case, fluted crown decorated with a blue cabochon-shaped sapphire, lacquered silvered guilloché dial with sunray effect, Roman numerals, sword-shaped hands in blued steel, sapphire crystal, alligator-skin strap, double adjustable folding buckle in 18K rose gold, chronograph and calendar with aperture at 9 o'clock, transparent case back with sapphire crystal. Case dimensions: 46.8 mm x 47.1 mm, thickness: 14.8 mm. Water-resistant to 30 metres.