 In 1945 Hans Wilsdorf set up the Hans Wilsdorf Foundation, to which in 1960 he handed over his 100% ownership stake in Rolex.The Hans Wilsdorf Foundation owns and controls Rolex to this day, and donates a great deal of its income to charity and social causes in Geneva, Switzerland.In 1945 Rolex set another horological precedent when they introduced the first wrist watch to feature an aperture window that automatically showed the date by using a date-wheel.