31 mm Oystersteel and white gold Oyster case with screw-down case back and winding crown. Screw-down winding crown with Twinlock double waterproofness system. Fluted bezel. Scratch-resistant sapphire crystal with Cyclops lens over the date. Aubergine dial with Roman numerals set with diamonds. Perpetual, mechanical, self-winding Calibre 2236, Manufacture Rolex, with Syloxi hairspring in silicon with patented geometry, high-performance Paraflex shock absorbers and bidirectional self-winding via Perpetual rotor. Functions: centre hour, minute and seconds hands; instantaneous date with rapid setting; stop-seconds for precise time setting. Precision -2/+2 sec/day after casing. Power reserve approximately 55 hours. Oyster bracelet with three-piece solid links and folding Oysterclasp with Easylink 5 mm comfort extension link. Waterproof to 100 metres / 330 feet. Superlative Chronometer (official chronometer certification + Rolex certification after casing).