Ballon Bleu de Cartier watch, 28 mm, quartz movement. Steel case, fluted crown set with a synthetic cabochon-shaped spinel, silvered opaline dial, Roman numerals, blued-steel sword-shaped hands, sapphire crystal. Interchangeable steel bracelet. Case dimensions: diameter: 28.6 mm, thickness: 9.35 mm. Water-resistant to 30 metres.