The Pioneering Original Introduced in 1945, the Rolex Datejust was the first wristwatch to combine a waterproof case, self-winding movement, and date display. Its timeless design and technical innovation have made it a cornerstone of the Rolex collection for generations. Sophistication and Precision This reference 116231, from 2005, features a 36mm case in Oystersteel and Everose gold with a fluted bezel and pink dial. It is powered by the calibre 3135 automatic movement with a 48-hour power reserve and is fitted with a Jubilee bracelet and Crownclasp. A refined and versatile expression of classic Rolex design.