Housed in a 31 mm Oyster case crafted from Yellow Rolesor — Rolex's combination of Oystersteel and yellow gold — this Datejust 31 features a monobloc middle case, screw-down case back, and a screw-down winding crown equipped with the Twinlock double waterproofness system, delivering water resistance to 100 metres / 330 feet. A domed bezel frames the scratch-resistant sapphire crystal, which incorporates a Cyclops lens positioned over the date window.
The white dial is dressed with Roman numeral hour markers, offering a classic and legible presentation. Powering the watch is Rolex's perpetual, mechanical, self-winding Calibre 2236 — a Manufacture Rolex movement featuring a Syloxi silicon hairspring with patented geometry, high-performance Paraflex shock absorbers, bidirectional winding via a Perpetual rotor, and a power reserve of approximately 55 hours. The movement carries Superlative Chronometer certification, reflecting COSC testing followed by Rolex's own certification after casing, with a precision rating of -2/+2 seconds per day.
The three-piece solid-link Oyster bracelet is rendered in matching Yellow Rolesor and secured by a folding Oysterclasp fitted with an Easylink 5 mm comfort extension link. Functions include centre hour, minute, and seconds hands, an instantaneous date with rapid setting, and stop-seconds for precise time setting.
