It features a D-blue dial and large luminescent hour markers. Waterproof to a depth of 3,900 metres (12,800 feet) with a unidirectional 60-minute rotatable bezel, the Rolex Deepsea is amongst the ultra-resistant divers’ watches engineered by Rolex for deep-sea exploration. Model features CERAMIC BEZEL AND LUMINESCENT DISPLAY Legendary divers’ watch OYSTERSTEEL Highly resistant to corrosion THE OYSTER BRACELET Alchemy of form and function WATERPROOF SYSTEM Robustness and reliability 3235 MOVEMENT Superlative performance SEA-DWELLER The watch that conquered the deep CONFIGURE Configure your Sea-Dweller ALL MODELS All Sea-Dweller models Specifications Reference 136660 Model Case Model Case Oyster, 44 mm, Oystersteel Oyster Architecture Monobloc middle case, screw-down case back and winding crown. Rolex Ringlock System case architecture with Helium escape valve Diameter 44 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, Twinlock double waterproofness system Crystal Domed, 5.5 mm-thick scratch-resistant sapphire Water Resistance Waterproof to 3,900 metres / 12,800 feet, helium escape valve Movement 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 Bracelet Oyster, flat three-piece links Bracelet Material Oystersteel Clasp Folding Oysterlock safety clasp with Rolex Glidelock extension system Dial Dial D-blue Details Highly legible Chromalight display with long-lasting blue luminescence Certification Certification Superlative Chronometer (COSC + Rolex certification after casing)
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