Sized at 28mm, the Lady-Datejust ref. 279174-0008 is built around an Oyster case constructed from White Rolesor, Rolex's combination of Oystersteel and white gold. The monobloc middle case is fitted with a screw-down case back and a screw-down Twinlock winding crown, delivering water resistance to 100 metres / 330 feet. A scratch-resistant sapphire crystal sits above the dial, complete with a Cyclops lens magnifying the date display.
The silver dial is dressed with Roman numeral hour markers, offering a classic and legible presentation. The Oyster bracelet in Oystersteel is composed of three-piece solid links and secured by a folding Oysterclasp with an Easylink 5mm comfort extension link, allowing for a precise and comfortable fit on the wrist.
Power comes from the Caliber 2236, a perpetual mechanical self-winding movement manufactured by Rolex. It beats with a Syloxi silicon hairspring of patented geometry and features Paraflex shock absorbers, delivering precision rated at -2/+2 seconds per day after casing. Bidirectional winding via the Perpetual rotor provides a power reserve of approximately 55 hours, and the movement holds Superlative Chronometer status through both COSC and Rolex certification after casing.
