Geneva, Switzerland. Factory C Watch Factory is located in Geneva, Switzerland. Rolex is a famous Swiss watch manufacturer, formerly known as WilsdorfandDavis (W&; D) Company, jointly operated by HansWilsdof, a German, and AlfredDavis, an Englishman, in London on 1905. 1908, registered by Hans Weisdorf in La Saud, Switzerland, and renamed as ROLEX, which ranks among the best in the world watch industry and is synonymous with "accuracy".