{"product_id":"rolex-datejust-278240-31mm-white-roman-domed-bezel-oyster-oystersteel","title":"Rolex Datejust 31 278240-0003 White Roman Numeral Dial Domed Bezel Oystersteel Oyster Bracelet","description":"\u003cp\u003eHoused in a round 31 mm Oystersteel case, the Datejust 31 reference 278240-0003 is built around the classic Oyster architecture: a monobloc middle case, screw-down case back, and a screw-down Twinlock winding crown that together deliver water resistance to 100 metres \/ 330 feet. Scratch-resistant sapphire crystal with a Cyclops lens magnifies the date, while the domed bezel keeps the profile clean and timeless.\u003c\/p\u003e\u003cp\u003eThe white dial features Roman numeral hour markers and houses the Calibre 2236 — a perpetual, mechanical, self-winding movement manufactured by Rolex rated to a precision of -2\/+2 seconds per day after casing, qualifying it as a Superlative Chronometer (COSC certified, then further certified by Rolex post-casing). A Syloxi silicon hairspring with patented geometry works alongside Paraflex shock absorbers, and bidirectional winding via the Perpetual rotor provides a power reserve of approximately 55 hours. Functions include centre hour, minute, and seconds hands, an instantaneous date with rapid setting, and stop-seconds for precise time adjustment.\u003c\/p\u003e\u003cp\u003eThe watch rides on an Oystersteel Oyster bracelet composed of three-piece solid links and secured by a folding Oysterclasp fitted with an Easylink 5 mm comfort extension link, allowing easy on-the-fly sizing adjustments.\u003c\/p\u003e","brand":"It's That Time","offers":[{"title":"Default Title","offer_id":49919955861733,"sku":null,"price":12000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/5600\/7653\/files\/Rolex-278240-0003-white-roman-oyster-1.jpg?v=1782916839","url":"https:\/\/itsthattimenyc.com\/products\/rolex-datejust-278240-31mm-white-roman-domed-bezel-oyster-oystersteel","provider":"It's That Time ","version":"1.0","type":"link"}