Crafted in White Rolesor, the 31 mm round case of this Datejust 31 (ref. 278384RBR-0033) brings together Oystersteel and white gold in Rolex's signature Oyster architecture, featuring a monobloc middle case, screw-down case back, and a screw-down winding crown with the Twinlock double waterproofness system. The diamond-set bezel frames a scratch-resistant sapphire crystal fitted with a Cyclops lens over the date aperture, while the solid case back and 100-metre water resistance speak to the watch's robust construction.
The silver dial is set with diamonds in 18 kt gold settings, adding depth and brilliance to the face. An instantaneous date with rapid setting is displayed at 3 o'clock, supported by stop-seconds for precise time adjustment. The Oystersteel Oyster bracelet is composed of three-piece solid links and closes with a folding Oysterclasp featuring an Easylink 5 mm comfort extension link.
Inside, Rolex Calibre 2236 — a perpetual, mechanical, self-winding movement — provides approximately 55 hours of power reserve and a precision rating of -2/+2 seconds per day after casing. The oscillator features a Syloxi silicon hairspring with patented geometry and high-performance Paraflex shock absorbers, and the movement is COSC certified. Winding is bidirectional via a Perpetual rotor.
