Sized at 31mm, this Datejust 31 is built around a White Rolesor case — Rolex's combination of Oystersteel and white gold — featuring a monobloc middle case, solid case back, and a screw-down winding crown with Twinlock double waterproofness system. The fluted bezel frames a bright black dial set with Roman numeral hour markers, while a scratch-resistant sapphire crystal with Cyclops lens keeps the date display clearly legible. Water resistance is rated to 100 metres / 330 feet.
The three-piece solid-link Oyster bracelet is crafted in Oystersteel and secured by a folding Oysterclasp with Easylink 5mm comfort extension link. Powering the watch is the Calibre 2236, a perpetual, mechanical, self-winding movement manufactured by Rolex, offering a precision of -2/+2 seconds per day after casing and an approximate power reserve of 55 hours. The oscillator features a Syloxi hairspring in silicon with patented geometry and high-performance Paraflex shock absorbers, and the movement is COSC certified.
Functions include centre hour, minute, and seconds hands, an instantaneous date with rapid setting, and stop-seconds for precise time setting — all delivered through bidirectional self-winding via the Perpetual rotor.
