At 28mm, the Lady-Datejust presents its signature proportions in White Rolesor — a blend of Oystersteel and white gold — with a monobloc middle case, screw-down case back, and a Twinlock double waterproofness winding crown delivering water resistance to 100 metres. The bezel is set with diamonds, while a scratch-resistant sapphire crystal with Cyclops lens magnifies the instantaneous date display above the white dial marked with Roman numeral hour indices.
Inside runs Rolex Calibre 2236, a self-winding mechanical movement with bidirectional winding via a Perpetual rotor and a power reserve of approximately 55 hours. The oscillator features a Syloxi silicon hairspring with patented geometry and Paraflex shock absorbers, achieving a precision of -2/+2 seconds per day after casing. The movement carries Superlative Chronometer certification, reflecting both COSC timing standards and Rolex's own post-casing verification.
The three-piece solid-link Oyster bracelet in Oystersteel secures with a folding Oysterclasp equipped with an Easylink 5mm comfort extension link, allowing a seamless fit adjustment on the wrist. Reference 279384RBR-0020 brings together a diamond-adorned exterior with mechanical precision in a size well suited to the Lady-Datejust collection.
