Housed in a 31 mm Oyster case crafted from Yellow Rolesor — Rolex's combination of Oystersteel and yellow gold — this Datejust 31 features a monobloc middle case with a screw-down case back and screw-down winding crown using the Twinlock double waterproofness system. The bezel is set with diamonds, while a scratch-resistant sapphire crystal with a Cyclops lens over the date completes the case. Water resistance is rated to 100 metres / 330 feet.
The champagne-colour dial is paired with an Oyster bracelet composed of three-piece solid links in Yellow Rolesor, secured by a folding Oysterclasp with an Easylink 5 mm comfort extension link. The movement within is Calibre 2236, a perpetual mechanical self-winding manufacture movement certified as a Superlative Chronometer to a precision of -2/+2 seconds per day after casing.
Calibre 2236 offers a power reserve of approximately 55 hours, bidirectional self-winding via a Perpetual rotor, and features a Syloxi silicon hairspring with patented geometry alongside high-performance Paraflex shock absorbers. Functions include centre hour, minute, and seconds hands, an instantaneous date with rapid setting, and stop-seconds for precise time setting.
