At 31 mm, this Datejust 31 presents a dark grey dial adorned with diamonds, including a large VI index set with 11 diamonds and Roman numeral hour markers throughout. The domed bezel and scratch-resistant sapphire crystal — fitted with a Cyclops lens over the date window — complete a refined, jewel-touched face. The case is constructed in Yellow Rolesor, Rolex's combination of Oystersteel and yellow gold, featuring a monobloc middle case, screw-down case back, and a Twinlock double-waterproofness winding crown rated to 100 metres / 330 feet.
The matching Oyster bracelet is built from three-piece solid links in the same Yellow Rolesor combination, secured by a folding Oysterclasp with an Easylink 5 mm comfort extension link. Inside runs the Calibre 2236, a perpetual mechanical self-winding movement developed by Manufacture Rolex. It features a Syloxi silicon hairspring with patented geometry, Paraflex shock absorbers, bidirectional winding via a Perpetual rotor, approximately 55 hours of power reserve, and a precision rating of -2/+2 seconds per day after casing.
The Calibre 2236 carries Superlative Chronometer certification, reflecting both COSC testing and Rolex's own post-casing verification. Functions include centre hour, minute, and seconds hands, an instantaneous date with rapid setting, and stop-seconds for precise time adjustment — practical mechanics wrapped in an elegantly appointed case.
