No doubt about it, Rolex is a chronometric legend. The company was founded in 1905 by Hans Wilsdorf, a Bavarian marketing genius who focused on innovation. Watch enthusiasts have Wilsdorf to thank for many outstanding models and technical advances, including the first officially-certified wristwatches, the waterproof Oyster housing, the Datejust, and sports watches like the Submariner diver's watch, which dates back more than fifty years.