Rolex Datejust 278240-0017

Rolex Datejust 278240-0017 31mm Blue Roman Domed Bezel Oyster Oystersteel

Rolex Datejust  31mm Blue Roman Domed Bezel Oyster Bracelet Oystersteel Watch Technical Specs: Brand : Rolex Model : Datejust 31 Reference Number : 278240-0017 CASE Case Shape : Round Case Dimensions : 31 mm Oyster Architecture : Monobloc middle case, screw-down case back and winding crown Crystal : Scratch-resistant sapphire, Cyclops lens over the date Bezel : Domed Winding Crown : Screw-down, Twinlock double waterproofness system Water Resistance : Waterproof to 100 metres / 330 feet Case Material : Oystersteel DIAL Dial Color : Blue Details : Roman Numerals BRACELET Band Material : Oystersteel Band Name : Oyster, three-piece solid links Clasp : Folding Oysterclasp with Easylink 5 mm comfort extension link MOVEMENT Movement Type : 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 COSC Certified : Superlative Chronometer (COSC + Rolex certification after casing) Brand : Rolex Dial Color : Blue Size : 31 ММ