At the heart of this Datejust 31 is a black mother-of-pearl dial set with diamonds mounted in 18 kt gold settings, framed by a domed bezel and protected by scratch-resistant sapphire crystal with a Cyclops lens over the date. The 31 mm case is crafted in Yellow Rolesor — a combination of Oystersteel and yellow gold — featuring a monobloc middle case, screw-down case back, and a screw-down Twinlock winding crown for waterproofness to 100 metres / 330 feet.
The three-piece solid-link Oyster bracelet is also rendered in Yellow Rolesor and fastens with a folding Oysterclasp equipped with an Easylink 5 mm comfort extension link. Inside, the Calibre 2236 Manufacture Rolex movement runs as a perpetual, mechanical, self-winding calibre with bidirectional winding via a Perpetual rotor, a Syloxi silicon hairspring with patented geometry, and Paraflex shock absorbers — delivering a precision of -2/+2 seconds per day after casing and approximately 55 hours of power reserve.
Functions include centre hour, minute, and seconds hands, instantaneous date with rapid setting, and stop-seconds for precise time setting. The watch carries Superlative Chronometer certification, reflecting both COSC testing and Rolex certification after casing. Reference 278243-0023.
