Housed in a round 31 mm case crafted from Everose Rolesor — Rolex's proprietary pairing of Oystersteel and Everose gold — the Datejust 278271-0017 features a monobloc middle case, solid case back, and a screw-down winding crown protected by the Twinlock double waterproofness system. The fluted bezel adds definition to the profile, while scratch-resistant sapphire crystal with a Cyclops lens over the date completes the case. Water resistance reaches 100 metres / 330 feet.
The slate dial works in quiet contrast to the warm tones of the Everose gold, and the date display is framed by the signature Cyclops magnification. The three-piece solid-link Oyster bracelet in matching Everose Rolesor fastens via a folding Oysterclasp fitted with the Easylink 5 mm comfort extension link, allowing for easy on-wrist adjustment.
Inside, the perpetual mechanical self-winding Calibre 2236 — a Manufacture Rolex movement — runs to a precision of -2/+2 seconds per day after casing and offers approximately 55 hours of power reserve. Its Syloxi silicon hairspring with patented geometry and high-performance Paraflex shock absorbers contribute to its reliability, and the movement is COSC certified. Functions include centre hour, minute, and seconds hands, instantaneous date with rapid setting, and stop-seconds for precise time setting.
