Measuring 31mm across its round Oystersteel and white gold White Rolesor case, this Datejust 31 features a monobloc middle case with screw-down case back and winding crown. The bezel is set with diamonds, while a scratch-resistant sapphire crystal with Cyclops lens over the date keeps the dial protected. Water resistance reaches 100 metres / 330 feet, supported by the screw-down Twinlock double waterproofness crown.
The dark grey dial offers a Chromalight display with long-lasting blue luminescence for legibility in low light. Powering the watch is the perpetual, mechanical, self-winding Calibre 2236, a Manufacture Rolex movement with a Syloxi silicon hairspring with patented geometry, high-performance Paraflex shock absorbers, and bidirectional self-winding via Perpetual rotor. Precision is rated at -2/+2 seconds per day after casing, with a power reserve of approximately 55 hours. The movement is COSC certified and carries an instantaneous date with rapid setting and stop-seconds functionality.
The watch is worn on an Oystersteel Jubilee bracelet with five-piece links, secured by a concealed folding Crownclasp. Reference 278384RBR-0020 is the Datejust 31 with date complication.
