Elegant Heritage The Rolex Datejust 31 brings the timeless appeal of the Datejust to a more refined scale. With its classic proportions and enduring design, it offers a perfect balance of elegance and performance. Classic Aesthetics This reference 178274, from 2015, features a 31mm case in Oystersteel and white gold with a fluted bezel and white dial. Powered by the calibre 2235 automatic movement, it offers a 48-hour power reserve and is fitted with a Jubilee bracelet and Crownclasp. A graceful and versatile expression of the Datejust legacy.