Cartier Santos de Cartier Medium Automatic 18ct Rose Gold Watch WGSA0028. 18ct rose gold 35.1mm case and set bezel all on a grey alligator leather strap and comes complete with an additional blue leather strap. This watch features a silver sunray dial with blued hands and black hour numerals. Water resistant up to 100m and sapphire crystal glass. Calibre 1847 MC automatic movement.