New with Tags; Box & Papers. Purchased August 2016 from an authorised Rolex dealer ( Jewellers). MODEL CASE Oyster, 40 mm, 904L steel / smooth Bezel OYSTER ARCHITECTURE Monobloc middle case, screw-down case back and winding crown -Twinlock double waterproofness system / Bidirectional self-winding via Perpetual rotor CRYSTAL Green sapphire, scratch-resistant WATER-RESISTANCE Waterproof to 100 metres / 330 feet MOVEMENT Perpetual, mechanical , self-winding , with a magnetic shield to protect the movement CALIBRE 3131, Manufacture Rolex FUNCTIONS Centre hour, minute and seconds hands. Stop-seconds for precise time setting POWER RESERVE Approximately 48 hours BRACELET Oyster, flat three-piece links - 904L Steel with folding Oysterclasp DIAL - Z-blue, highly legible Chromalight display with long-lasting blue
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