Model case Oyster, 36 mm, Everose gold Oyster architecture Monobloc middle case, screw-down case back and winding crown Diameter 36 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 Water resistance Waterproof to 100 metres / 330 feet Movement Perpetual, mechanical, self-winding Calibre 3255, Manufacture Rolex Precision -2/+2 sec/day, after casing Functions Centre hour, minute and seconds hands. Instantaneous day and date in apertures, secure rapid-setting. Stop-seconds for exact time setting Oscillator Paramagnetic blue Parachrom hairspring. High-performance Paraflex shock absorbers Winding Bidirectional self-winding via Perpetual rotor Power reserve Approximately 70 hours Bracelet President, semi-circular three-piece links Material 18 kt Everose gold Clasp Concealed folding Crownclasp