Cartier Ballon Bleu de Cartier

Cartier's Ballon Bleu de Cartier, reference WSBB0030, has a 33 mm steel case. The round case is 10.16 mm thick, and a sapphire crystal covers the silver guilloché opaline dial. Calibre 1853 is a self-winding mechanical movement with a 37 hour power reserve. The dial shows hours, minutes and central seconds. The hands are blued steel and sword-shaped, and the fluted steel crown is set with a cabochon synthetic spinel. Cartier rates the case to 30 metres, or 3 bar. A black alligator leather strap is fitted to the watch, and the steel deployant buckle is interchangeable.