Cartier Ballon Bleu 42mm Blue Dial Men's Automatic Leather Strap Watch WSBB0027. Stainless steel 42mm case and bezel all on a blue leather strap. This men's watch has a blue guilloche dial with polished hands and roman numerals. date display at the 3 o'clock position. Sapphire crystal glass and water resistant up to 30m. Automatic movement.