This Cartier Santos de Cartier model ref: WSSA0018 is the large 39.8mm with a mechanical movement with automatic winding with caliber 1847 MC, steel case, steel crown set with a faceted synthetic spinel, silvered opaline dial with Roman numerals, steel sword-shaped hands, sapphire crystal. This model comes with two interchangeable bracelets, one full steel and the second in calfskin. The full steel is made with a “SmartLink” adjustment system. Both bracelets are fitted with the “QuickSwitch” interchangeability system. This unworn watch comes with the original box and papers, a 2-year Cagau warranty, and the time remaining on the manufacturer's warranty.