At 31 mm, this Datejust 31 is built around a Yellow Rolesor Oyster case — a combination of Oystersteel and yellow gold — featuring a monobloc middle case, screw-down case back, and a screw-down Twinlock winding crown that delivers waterproofness to 100 metres / 330 feet. The domed bezel is set with diamonds, and a scratch-resistant sapphire crystal with a Cyclops lens over the date completes the case.
The black mother-of-pearl dial is set with diamonds in 18 kt gold settings, offering a rich contrast of depth and brilliance. The five-piece link Jubilee bracelet in matching Yellow Rolesor closes with a concealed folding Crownclasp, carrying the same combination of Oystersteel and yellow gold throughout.
Inside beats the Calibre 2236, a perpetual, mechanical, self-winding movement manufactured by Rolex. It features bidirectional winding via a Perpetual rotor, a Syloxi hairspring in silicon with patented geometry, Paraflex shock absorbers, and an approximately 55-hour power reserve. Certified as a Superlative Chronometer — meeting both COSC standards and Rolex's own post-casing certification — it achieves a precision of -2/+2 seconds per day.
