Cartier Ballon Bleu de Cartier

Cartier's Ballon Bleu de Cartier, reference WSBB0027, has a 42 mm round case in steel. The case is 13 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 guilloché dial, which carries sword-shaped hands. The dial shows central seconds and a date, with the calendar aperture at 3 o'clock. The fluted crown is set with a cabochon synthetic spinel. A blue alligator leather strap is fitted to the watch, with a steel folding clasp.