Housed in a 31mm round case crafted from White Rolesor — Rolex's combination of Oystersteel and white gold — this Datejust 31 wears a bezel set with diamonds and features a solid case back with a screw-down winding crown utilizing the Twinlock double waterproofness system. Scratch-resistant sapphire crystal with a Cyclops lens over the date window tops the case, and water resistance extends to 100 metres / 330 feet.
The pink dial is rendered with Roman numeral hour markers and an instantaneous date display. Beneath it runs the Calibre 2236, a perpetual mechanical self-winding movement from Manufacture Rolex, offering a precision rating of -2/+2 seconds per day after casing, a power reserve of approximately 55 hours, and a Syloxi silicon hairspring with Paraflex shock absorbers. The movement is COSC certified and winds bidirectionally via the Perpetual rotor.
The watch sits on a Jubilee bracelet composed of five-piece links in Oystersteel, secured by a concealed folding Crownclasp. Reference 278384RBR-0024 carries the date complication as its sole function alongside center hour, minute, and seconds hands with stop-seconds for precise setting.
