Rolex Datejust | Reference 278274 | A White Rolesor Automatic Diamond-Set Datejust 31 Wristwatch

The Rolex Oyster Perpetual Datejust 31 reference 278274 presents classic proportions paired with contemporary engineering. Built in White Rolesor, the architecture unites a rugged Oystersteel middle case with a fluted bezel crafted in 18 ct white gold. A scratch-resistant sapphire crystal houses the signature Cyclops magnification lens over the instantaneous date display at 3 o’clock, maintaining a balanced face framed by the signature fluted rim.

A sunray dark grey dial provides rich contrast against the ten brilliant-cut diamonds, each held securely within an 18 ct gold chaton. The Oyster case measures 31 mm across and features a solid screw-down case back alongside a Twinlock double waterproofness screw-down winding crown, guaranteeing water resistance to 100 metres.

Beating inside is the manufacture Calibre 2236, a self-winding mechanical movement equipped with bidirectional winding via a Perpetual rotor. Fitted with Rolex’s patented Syloxi silicon hairspring and Paraflex shock absorbers, the mechanism yields dependable resistance to magnetic fields and temperature shifts. The movement operates at 28,800 beats per hour and delivers approximately 55 hours of power reserve with stop-seconds precision.

Completing the watch is a five-piece link Oystersteel Jubilee bracelet secured by a concealed folding Crownclasp, draping seamlessly across the wrist. The 31 mm diameter offers versatile wrist presence, bridging jewellery elegance and daily robustness for all-day wear.