Hans Wilsdorf proved to be a resourceful Franconian and surprised the market in 1945 with a Rolex wristwatch for ladies with a date display. Since he was not completely satisfied with it, Wilsdorf later extended the watch by a Zyklop magnifying glass on the date display, which allowed a 2 1/2-fold magnification. This was the birth of the very first Rolex Datejust. With the Rolex Datejust 31, the company has launched a further development of wristwatches for women at that time. The Rolex Datejust 31 watch model also offers an enormous variety of different designs.