18K white gold case. Black alligator strap. Silver grained dial. 18kt white gold adjustable deployment buckle. 18kt white gold octagonal crown set with faceted sapphire. Hand-wound mechanical movement. Guilloche dial with Roman numeral hour markers. Sapphire crystal. Water resistant at 30 meters (100 feet). Cartier Santos Dumont White Gold Unisex Watch W2007051 