Cartier Santos Dumont 18ct Rose Gold Large Steel Strap Watch WGSA0021. 18ct rose gold 43.5mm x 31.4mm case and bezel all on a gray alligator leather strap. This men's watch has a satin-brushed silver dial with black roman numerals and blued steel hands. Water resistant up to 30m and sapphire crystal glass. Quartz movement.