1904, Louis Cartier granted the wish of the famous Brazilian aviator Alberto Santos Dumont: to be able to tell time while flying. The birth of one of the first ever wristwatches sealed the bonds of friendship between these two pioneers. The rounded angles of the dial, the seamless curve of the horns, and the exposed screws made for an iconic watch that would inspire countless reinterpretations. Santos watch, extra-large model, chronograph mechanical movement with automatic winding, caliber 1904 CH MC. Steel case, 18K yellow gold bezel, 7-sided crown set with a faceted blue synthetic spinel, satin-brushed silver dial, black steel sword-shaped hands with luminescent material, sapphire crystal. Steel bracelet with “SmartLink” adjustment system. Second strap in rubber, with steel folding buckle. Both bracelets are fitted with the “QuickSwitch” interchangeability system.