Model case Oyster, 41 mm, Oystersteel Oyster architecture Monobloc middle case, screw-down case back and winding crown Diameter 41 mm Material Oystersteel Bezel Unidirectional rotatable 60-minute graduated, scratch-resistant Cerachrom insert in ceramic, numerals and graduations coated in platinum Winding crown Screw-down, Triplock triple waterproofness system Crystal Scratch-resistant sapphire, Cyclops lens over the date Water resistance Waterproof to 300 metres / 1,000 feet Movement Perpetual, mechanical, self-winding Calibre 3235, 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 Paramagnetic blue Parachrom hairspring. High-performance Paraflex shock absorbers Winding Bidirectional self-winding via Perpetual rotor Power reserve Approximately 70 hours Bracelet Oyster, three-piece solid links Material Oystersteel Clasp Folding Oysterlock safety clasp with Rolex Glidelock extension system