Crafted entirely in 18kt yellow gold, the 28mm round case features a monobloc middle, solid case back, and a screw-down winding crown equipped with Rolex's Twinlock double waterproofness system, delivering water resistance to 100 metres. A scratch-resistant sapphire crystal sits above the dial, incorporating a Cyclops lens that magnifies the instantaneous date display.
The champagne dial is dressed with Roman numeral hour markers and read through a Calibre 2236 perpetual, mechanical self-winding movement. That movement features a Syloxi silicon hairspring with patented geometry, Paraflex shock absorbers, bidirectional winding via a Perpetual rotor, and a power reserve of approximately 55 hours. Precision after casing is rated at -2/+2 seconds per day, meeting the Superlative Chronometer standard through both COSC and subsequent Rolex certification.
The watch is secured on an 18kt yellow gold Jubilee bracelet closed by a concealed folding Crownclasp, lending the piece its characteristic fluid drape on the wrist. Reference number 279178-0023 rounds out the key identifiers for this Lady-Datejust configuration.
