At 28mm, the Lady-Datejust 279163-0014 is built around a monobloc Oyster case crafted in Yellow Rolesor, Rolex's combination of Oystersteel and yellow gold. A domed bezel frames the scratch-resistant sapphire crystal, which features a Cyclops lens positioned over the date display. The screw-down winding crown employs a Twinlock double waterproofness system, and the case is waterproof to 100 metres / 330 feet.
The dial presents mother of pearl set with diamonds held in 18 kt gold settings, lending the piece a distinctive luminous quality. The Oyster bracelet, constructed from three-piece solid links in matching Yellow Rolesor, fastens via a folding Oysterclasp fitted with an Easylink 5 mm comfort extension link.
Inside runs the Caliber 2236, a perpetual mechanical self-winding movement manufactured by Rolex. It delivers a precision of -2/+2 seconds per day after casing, a power reserve of approximately 55 hours, and features a Syloxi silicon hairspring with patented geometry alongside Paraflex shock absorbers. The movement carries Superlative Chronometer certification, reflecting both COSC and Rolex's own post-casing standards.
