Ballon Bleu de Cartier watch, 42 mm, mechanical movement with automatic winding, steel

Ballon Bleu de Cartier watch, 42 mm. Mechanical movement with automatic winding, calibre 1847 MC. Case in steel, fluted crown set with a synthetic cabochon-shaped spinel. Silvered guilloché dial. Blued-steel sword-shaped hands. Sapphire crystal. Calendar aperture at 3 o'clock. Interchangeable steel bracelet. Thickness: 13 mm. Water-resistant to 3 bar (approx. 30 metres).