Cartier Ballon Bleu de Cartier

The Ballon Bleu de Cartier, reference WGBB0063, has a 40 mm round case in 18K yellow gold. The case is 12.4 mm thick. Cartier rates the case to 30 metres. Calibre 1847 MC is a self-winding movement with a 40 hour power reserve. A sapphire crystal covers the blue sunray dial. The watch shows central seconds and a date, with the calendar aperture at 3 o'clock. The fluted yellow gold crown is set with a sapphire cabochon. The dark blue alligator leather strap is interchangeable and has an 18K yellow gold interchangeable folding clasp.