Reference 278344RBR-0016 presents the Datejust 31 in White Rolesor — a combination of Oystersteel and white gold — with a round 31 mm case built around a monobloc middle, solid screw-down case back, and a screw-down Twinlock winding crown rated waterproof to 100 metres. The domed bezel is set with diamonds, while a scratch-resistant sapphire crystal with Cyclops lens over the date keeps the dial protected and easy to read.
The pink dial features Rolex's Chromalight display with long-lasting blue luminescence, offering clear legibility across varying light conditions. Inside, the Calibre 2236 — a perpetual, mechanical, self-winding movement from Manufacture Rolex — delivers a precision of -2/+2 seconds per day after casing, a power reserve of approximately 55 hours, and bidirectional self-winding via a Perpetual rotor. The oscillator employs a Syloxi silicon hairspring with patented geometry alongside Paraflex shock absorbers. The movement is COSC certified and provides instantaneous date display with rapid setting and stop-seconds functionality.
The Oystersteel Jubilee bracelet with its characteristic five-piece links fastens via a concealed folding Crownclasp, completing a refined 31 mm package that balances the warmth of the pink dial against the cool tones of the White Rolesor case and diamond bezel.
