At 31 mm, this Datejust 31 is built around a round White Rolesor case combining Oystersteel and white gold, featuring a monobloc middle case, screw-down case back, and a screw-down Twinlock winding crown for water resistance to 100 metres. The bezel is set with diamonds, and a scratch-resistant sapphire crystal with a Cyclops lens magnifies the date window at 3 o'clock.
The silver dial is equipped with a Chromalight display offering long-lasting blue luminescence for legibility in low light. The Oyster bracelet is composed of three-piece solid links in Oystersteel and fastens with a folding Oysterclasp fitted with an Easylink 5 mm comfort extension link.
Inside runs the Rolex Calibre 2236, a perpetual mechanical self-winding movement with a Syloxi silicon hairspring, 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 movement is COSC certified and delivers an instantaneous date with rapid setting alongside a stop-seconds function.
