Cartier Ballon Bleu de Cartier 33mm 18ct Yellow Gold Bracelet Watch WGBB0045. 18ct yellow gold 33mm case and bezel. cabachon sapphire crown all on an 18ct yellow gold bracelet. This ladies watch has a silvered guilloche dial with blued steel hands and black numerals. Water resistant up to 30m and sapphire crystal glass. Automatic movement.