Housed in a 31 mm round Oystersteel case, this Datejust 31 features the classic Oyster architecture: a monobloc middle case, screw-down case back, and a screw-down Twinlock winding crown that delivers waterproofness to 100 metres / 330 feet. The domed bezel frames a scratch-resistant sapphire crystal fitted with a Cyclops lens over the date window.
The dark grey dial is equipped with a Chromalight display, providing long-lasting blue luminescence for reliable legibility in low-light conditions. At the heart of the watch sits Calibre 2236, a perpetual mechanical self-winding movement built by Rolex, featuring a Syloxi silicon hairspring with patented geometry and Paraflex shock absorbers. It delivers precision of -2/+2 seconds per day after casing, a power reserve of approximately 55 hours, and holds Superlative Chronometer certification — meeting both COSC standards and Rolex's own post-casing requirements.
The watch rides on an Oystersteel Oyster bracelet composed of three-piece solid links, secured by a folding Oysterclasp with an Easylink 5 mm comfort extension link for easy on-wrist adjustment.
