Rolex Datejust 31 Yellow Rolesor — White Roman Dial, Domed Diamond Bezel | Ref. 278343

Introduced at Baselworld 2019 as part of Rolex's significant Datejust refresh, reference 278343 brought the 31 mm case size into the modern Datejust era with contemporary proportions and updated movement technology. The Yellow Rolesor construction — Oystersteel for the monobloc middle case and solid 18-carat yellow gold for the crown, caseback and domed bezel — delivers the warmth of precious metal within a case architecture built for durability. The bezel itself is set with a full complement of brilliant-cut diamonds whose warm fire complements the yellow gold setting.

A white dial bearing Roman numerals provides the visual counterpoint, its clean ivory surface offering high contrast against the gold numerals and hands. Calibre 2236 — featuring the silicon Syloxi hairspring that renders the movement virtually immune to magnetic interference — self-winds bidirectionally via Rolex's Perpetual rotor and maintains a power reserve of approximately 55 hours. The date, displayed at three o'clock and magnified by the sapphire cyclops lens, changes instantaneously at midnight via Rolex's patented rapid-setting mechanism.

The yellow Rolesor Jubilee bracelet, composed of semi-circular three-piece links alternating Oystersteel and yellow gold, closes with a concealed Crownclasp — a clasp architecture that allows the bracelet's clean upper surface to continue uninterrupted to the skin side, where the locking mechanism operates invisibly. Waterproof to 100 metres, the 278343 is a Datejust 31 fully attuned to contemporary tastes while grounded in the model's seven-decade heritage.