Model case Oyster, 40 mm, Everose gold Oyster architecture Monobloc middle case, screw-down case back and winding crown Diameter 40 mm Material 18 kt Everose gold Bezel Fluted Winding crown Screw-down, Twinlock double waterproofness system Crystal Scratch-resistant sapphire, Cyclops lens over the date Case back Transparent case back with anti-reflective coating Water resistance Waterproof to 100 metres / 330 feet Movement Perpetual, mechanical, self-winding Calibre 7135, Manufacture Rolex Precision -2/+2 sec/day, after casing Functions Centre hour, minute and seconds hands. Instantaneous date with rapid setting. Stop-seconds for precise time setting Oscillator Syloxi hairspring in silicon with patented geometry. High-performance Paraflex shock absorbers Winding Bidirectional self-winding via Perpetual rotor Power reserve Approximately 66 hours Bracelet Flat Jubilee, five-piece solid links Material 18 kt Everose gold Clasp Concealed folding Crownclasp Dial Intense white, honeycomb motif Details Highly legible Chromalight display with long-lasting blue luminescence