Santos watch, medium model, Manufacture mechanical movement with automatic winding, caliber 1847 MC. Steel case and 18K yellow gold (750/1000) bezel, 7-sided crown set with a faceted synthetic blue spinel, silvered opaline dial, blued-steel sword-shaped hands, sapphire crystal. Steel bracelet with 'SmartLink' adjustment system. Second bracelet in calfskin, with interchangeable steel folding buckle. Both bracelets are fitted with the 'QuickSwitch' interchangeability system. An iconic watch created in 1904 at the request of Alberto Santos Dumont.