{"product_id":"rolex-datejust-278240-31mm-black-roman-domed-bezel-oyster-oystersteel","title":"Rolex Datejust 31 278240-0001 Oystersteel Black Roman Numeral Dial Oyster Bracelet","description":"\u003cp\u003eMeasuring 31 mm in diameter, the round Oystersteel case is built around a monobloc middle case with a screw-down case back and screw-down winding crown employing a Twinlock double waterproofness system. A scratch-resistant sapphire crystal protects the dial and carries a Cyclops lens over the date aperture, while the case maintains water resistance to 100 metres \/ 330 feet.\u003c\/p\u003e\u003cp\u003eThe black dial displays the time through Roman numerals and a date complication with rapid setting, complemented by centre hour, minute, and seconds hands with stop-seconds functionality for precise time setting. The domed bezel frames the dial with clean, unadorned lines suited to the overall proportions of the 31 mm case.\u003c\/p\u003e\u003cp\u003ePower comes from Calibre 2236, a Manufacture Rolex perpetual mechanical self-winding movement with bidirectional winding via a Perpetual rotor and a power reserve of approximately 55 hours. The oscillator features a Syloxi silicon hairspring with patented geometry and Paraflex shock absorbers, achieving a precision of -2\/+2 seconds per day after casing — earning Superlative Chronometer status through both COSC and Rolex certification. The Oystersteel Oyster bracelet fastens with a folding Oysterclasp fitted with an Easylink 5 mm comfort extension link.\u003c\/p\u003e","brand":"It's That Time","offers":[{"title":"Default Title","offer_id":49919957172453,"sku":null,"price":12660.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/5600\/7653\/files\/Rolex-278240-0001-black-roman-oyster-1.jpg?v=1782916842","url":"https:\/\/itsthattimenyc.com\/products\/rolex-datejust-278240-31mm-black-roman-domed-bezel-oyster-oystersteel","provider":"It's That Time ","version":"1.0","type":"link"}