Reference 278383RBR-0014 presents the Datejust 31 in Yellow Rolesor — Rolex's combination of Oystersteel and yellow gold. The 31 mm Oyster case is built around a monobloc middle case with a screw-down case back and a screw-down Twinlock winding crown, delivering water resistance to 100 metres / 330 feet. The bezel is set with diamonds, while a scratch-resistant sapphire crystal with a Cyclops lens over the date sits above the champagne-colour dial.
Inside, Rolex Calibre 2236 drives the watch — a perpetual, mechanical, self-winding movement with a bidirectional Perpetual rotor and a power reserve of approximately 55 hours. The oscillator features a Syloxi silicon hairspring with patented geometry and Paraflex shock absorbers. Certified as a Superlative Chronometer after casing, it delivers precision of -2/+2 seconds per day, with an instantaneous date and stop-seconds function for exact time setting.
The Jubilee bracelet, rendered in the same Yellow Rolesor combination, is constructed from three-piece solid links and fastens with a folding Oysterclasp featuring an Easylink 5 mm comfort extension link for a versatile, secure fit.
