Housed in a 31 mm Yellow Rolesor case — Rolex's signature blend of Oystersteel and yellow gold — this Datejust 31 features the Oyster architecture's monobloc middle case, screw-down case back, and screw-down winding crown with Twinlock double waterproofness, delivering water resistance to 100 metres / 330 feet. A scratch-resistant sapphire crystal with a Cyclops lens over the date sits above a domed bezel, completing the case profile.
The dial is rendered in white mother-of-pearl and set with diamonds held in 18 kt gold settings, lending it a quietly luminous character. The three-piece solid-link Oyster bracelet shares the same Yellow Rolesor composition as the case, and fastens via a folding Oysterclasp equipped with an Easylink 5 mm comfort extension link.
Inside runs the Calibre 2236, a perpetual, mechanical, self-winding movement produced by Manufacture Rolex. It features a Syloxi silicon hairspring with patented geometry, high-performance Paraflex shock absorbers, bidirectional winding via a Perpetual rotor, an approximately 55-hour power reserve, and stop-seconds for precise time setting. The movement carries Superlative Chronometer certification, reflecting both COSC testing and Rolex's own post-casing standards.
