Rolex Datejust 31 Yellow Gold — Fluted Bezel, White Roman Dial | Ref. 278278

Reference 278278 distils the Datejust 31 to one of its most classically coherent expressions: an 18-carat yellow gold case with fluted bezel, white dial, and Roman numeral chapter ring — components that recall the watch's post-war origins while meeting every contemporary technical standard. The 31 mm Oyster case is wrought entirely in 18-carat yellow gold, a material Rolex has deployed continuously in the Datejust range since 1945. The fluted bezel machined from the same gold provides visual continuity between case and bezel, its fine ridges animating the watch's profile under raking light. The Twinlock screw-down crown ensures water resistance to 100 metres.

On the dial, a white lacquer ground is inscribed with Roman numerals in polished yellow gold — a typographic tradition that assigns the Datejust 31 to the formal register of dress watchmaking and evokes the aesthetic conventions of pocket watch dials from a century prior. The Cyclops lens at 3 o'clock magnifies the instantaneous date display 2.5 times for effortless reading, while the double anti-reflective coating on the sapphire crystal ensures legibility across lighting conditions. Together, these elements produce a dial of quiet, enduring authority.

The Calibre 2236 — Rolex's manufacture self-winding movement for the Datejust 31 — operates at 28,800 vph with the Syloxi silicon hairspring, which confers resistance to magnetic fields and improves isochronism over traditional alloy springs. Approximately 55 hours of power reserve, stop-seconds for precision setting, and instantaneous date change complete the technical specification. The watch is presented on an 18-carat yellow gold Oyster bracelet with flat three-piece links and a concealed folding Crownclasp — an understated choice that allows the gold case and white Roman dial to carry the design narrative without competition.