Description: ROLEX Model case Oyster, 41 mm, Oystersteel and yellow gold colour Oyster architecture Monobloc middle case, screw-down case back and winding crown 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 Functions Centre hour, minute and seconds hands. Instantaneous date with rapid setting. Stop-seconds for precise 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 Jubilee, five-piece links Clasp Folding Oysterclasp with Easylink 5 mm comfort extension link Dial White Details Highly legible Chromalight display with long-lasting blue luminescence