Crafted in 18 kt yellow gold, this 28 mm Lady-Datejust houses a white mother-of-pearl dial with diamonds set in 18 kt gold settings, framed by a fluted bezel. The Oyster case features a monobloc middle, solid screw-down case back, and a screw-down winding crown with Twinlock double waterproofness, providing water resistance to 100 metres / 330 feet. Scratch-resistant sapphire crystal with a Cyclops lens over the date window completes the case.
The 18 kt yellow gold President bracelet with semi-circular three-piece links fastens via a concealed folding Crownclasp. Inside, Calibre 2236 — a perpetual, mechanical, self-winding movement — delivers a precision of -2/+2 seconds per day after casing, with approximately 55 hours of power reserve. The oscillator features a Syloxi hairspring in silicon with patented geometry and high-performance Paraflex shock absorbers, while bidirectional self-winding is achieved via the Perpetual rotor.
Functions include centre hour, minute, and seconds hands, an instantaneous date with rapid setting, and stop-seconds for precise time setting. The movement carries Superlative Chronometer status, reflecting both COSC certification and Rolex's own certification after casing. Reference 279178-0025.
