Crafted from 18kt white gold, the 28mm Oyster case features a monobloc middle case, screw-down case back, and a screw-down winding crown with Twinlock double waterproofness — delivering water resistance to 100 metres. The bezel is set with 44 brilliant-cut diamonds, while a scratch-resistant sapphire crystal with a Cyclops lens over the date completes the case.
The dark grey dial is dressed with Roman numerals and houses the Manufacture Rolex Calibre 2236 — a perpetual, mechanical, self-winding movement certified as a Superlative Chronometer to a precision of -2/+2 seconds per day after casing. Its Syloxi silicon hairspring with patented geometry and Paraflex shock absorbers contribute to its approximately 55-hour power reserve, with bidirectional winding via a Perpetual rotor.
The watch rides on the President bracelet in 18kt white gold, distinguished by its semi-circular three-piece links and secured by a concealed folding Crownclasp. Reference 279139RBR-0010 represents the Lady-Datejust at its most refined, uniting diamond accents with the enduring precision of a Rolex manufacture movement.
