Rolex Datejust 36 16013 36mm Bi-Colour Watch The Rolex Datejust is an intricate timepiece which was launched by Rolex back in 1946, being a perfect addition to any watch collection. This pre-owned example is finished with a champagne dial inside a 36mm bi-colour case, which is fitted on an 18cm bi-colour bracelet. The watch is also powered by an Automatic movement and is water resistant up to 100 metres.