At 28 mm, the Lady-Datejust 279163-0008 wears the classic Oyster architecture: a monobloc middle case, screw-down case back, and a screw-down Twinlock winding crown rated waterproof to 100 metres / 330 feet. The domed bezel and scratch-resistant sapphire crystal with a Cyclops lens over the date complete the case in Yellow Rolesor — Rolex's own combination of Oystersteel and yellow gold.
The silver dial is set with diamonds mounted in 18 kt gold settings, lending each hour a quiet brilliance. Inside, Caliber 2236 — a perpetual, mechanical, self-winding movement from Manufacture Rolex — delivers a precision of -2/+2 seconds per day after casing, a Syloxi silicon hairspring with patented geometry, Paraflex shock absorbers, bidirectional winding via a Perpetual rotor, and a power reserve of approximately 55 hours. The movement holds Superlative Chronometer certification, reflecting both COSC testing and Rolex's own post-casing verification.
The Yellow Rolesor Oyster bracelet closes with a folding Oysterclasp featuring an Easylink 5 mm comfort extension link, offering a secure and adjustable fit that complements the two-tone aesthetic of the case.
