When Brazilian aviator Alberto Santos-Dumont asked his friend Louis Cartier to create a watch that could be used while piloting his hot air balloon, the Parisian jeweller inadvertently became the creator of the world's first pilot's watch. A perfect balance of style and function, the 1904 watch has endured the test of time with honours. The Cartier Santos-Dumont watch is now one of the French maison's signature timepieces. With a 44.6 x 34.6mm white gold case, the classic Cartier silver grained dial features black Roman numerals and black sword-shaped oxidised steel hour and minute hands. The octagonal crown is set with a faceted sapphire. Powered by the Cartier manual-winding calibre 430 MC, the Cartier Santos-Dumont watch is water resistant to 30m and presented on a black alligator strap that fastens with a white gold buckle.