Ballon Bleu de Cartier watch, 36 mm, mechanical self-winding movement. Steel case, fluted crown decorated with a synthetic spinel cabochon, silvered guilloché opaline dial, Roman numerals, blued-steel sword-shaped hands, sapphire crystal, alligator-skin strap, double adjustable folding steel buckle. Case dimensions: diameter: 36.6mm, thickness: 12.05 mm. Water-resistant to 3 bar (approx. 30 metres).