Crafted in 18kt yellow gold, the 28mm round case of this Lady-Datejust features a fluted bezel, solid case back, and a screw-down winding crown equipped with Rolex's Twinlock double waterproofness system. A scratch-resistant sapphire crystal with a Cyclops lens over the date window tops the case, and the watch carries a water resistance rating of 100 metres / 330 feet.
The silver dial is dressed with Roman numeral hour markers and displays the date via an instantaneous date function with rapid setting. Beneath the solid case back, the Calibre 2236 self-winding mechanical movement — a Manufacture Rolex perpetual movement — offers a precision rating of -2/+2 seconds per day after casing, a power reserve of approximately 55 hours, and a Syloxi silicon hairspring paired with Paraflex shock absorbers. The movement holds Superlative Chronometer status, reflecting both COSC certification and Rolex's own post-casing standards.
The watch rides on an 18kt yellow gold President bracelet composed of semi-circular three-piece links, secured by a concealed folding Crownclasp. Reference 279178-0020 brings together the date complication, a warm yellow gold palette, and the enduring proportions of the Lady-Datejust in a single refined package.
