Crafted in Everose Rolesor — Rolex's proprietary combination of Oystersteel and Everose gold — the 31 mm round case of reference 278241-0023 features a domed bezel, solid case back, and a screw-down winding crown protected by the Twinlock double waterproofness system. Scratch-resistant sapphire crystal with a Cyclops lens over the date window completes the case, which carries a water resistance rating of 100 metres / 330 feet.
The rosé-colour dial is set with diamonds in 18 kt gold settings, lending the watch a distinct character. Magnified date display is handled by the Cyclops lens above, while the overall composition reflects the refined aesthetic the Datejust 31 is known for.
Inside beats the Calibre 2236, a perpetual mechanical self-winding movement manufactured by Rolex, with a precision rating of -2/+2 seconds per day after casing and a power reserve of approximately 55 hours. A Syloxi silicon hairspring with patented geometry and Paraflex shock absorbers underpin its performance. The matching Everose Rolesor Oyster bracelet with three-piece solid links fastens via a folding Oysterclasp fitted with an Easylink 5 mm comfort extension link.
