Pre-owned Santos de Cartier watch ref WSSA0018 traces its roots back to 1904, when Louis Cartier created a practical timepiece for aviator Alberto Santos-Dumont, one of the earliest men’s wristwatches designed specifically for use on the wrist rather than in a pocket. That pioneering spirit still defines the model today, from the softly rounded square case to the signature exposed screws that have become synonymous with the Santos name. This large-model Cartier measures 39.8 mm across with a slim 9.38 mm profile, giving it strong presence without feeling bulky. The stainless steel case frames a silvered opaline dial, paired with steel sword-shaped hands and protected by a sapphire crystal. A seven-sided crown set with a faceted synthetic spinel adds a subtle Cartier flourish. Inside, the automatic caliber 1847 MC delivers dependable everyday performance, while 100 meters of water resistance makes this a surprisingly capable companion beyond its refined appearance. Shop Cartier Watches Shop Cartier Santos De Cartier Watches