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Model case Oyster, 31 mm, yellow gold Oyster architecture Monobloc middle case, screw-down case back and winding crown Diameter 31 mm Material 18 kt yellow 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 2236, 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 55 hours Bracelet President, semi-circular three-piece links Material 18 kt yellow gold Clasp Concealed folding Crownclasp
Model case Oyster, 31 mm, yellow gold Oyster architecture Monobloc middle case, screw-down case back and winding crown Diameter 31 mm Material 18 kt yellow 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 2236, 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 55 hours Bracelet President, semi-circular three-piece links Material 18 kt yellow gold Clasp Concealed folding Crownclasp