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\"Rolex

Model Availability

All Rolex watches are assembled by hand with the utmost care to ensure exceptional quality. Such high standards naturally restrict Rolex production capacity and, at times, the demand for Rolex watches outpaces this capacity.

Therefore, the availability of certain models may be limited. New Rolex watches are exclusively sold by Official Rolex Retailers, who receive regular deliveries and independently manage the allocation and sales of watches to customers. The 1916 Company is proud to be part of the worldwide network of Official Rolex Retailers and can provide information on the availability of Rolex watches.

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I have read and accepted theterms and conditions and privacy policy.
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Suggested retail price before applicable taxes.

The suggested price can be modified at any time without notice.

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"num": 1, "id": "watch_assets_front_facing", "img": "https://watchbox-sfcc.imgix.net/plp-blank.png?w=90&h=90", "imgportrait": "https://the1916company.imgix.net/rolex/collection-2026-base/model_gallery_assets/portrait/slides1/m278240-0018.jpg?auto=format,compress&bg-remove=true", "imglandscape": "https://the1916company.imgix.net/rolex/collection-2026-base/model_gallery_assets/landscape/slides1/m278240-0018.jpg?auto=format,compress&bg-remove=true", "alt": "Image #2", "title": "Image #2" }, { "num": 2, "id": "watch_assets_front_facing", "img": "https://watchbox-sfcc.imgix.net/plp-blank.png?w=90&h=90", "imgportrait": "https://the1916company.imgix.net/rolex/collection-2026-base/model_gallery_assets/portrait/slides2/m278240-0018.jpg?auto=format,compress&bg-remove=true", "imglandscape": "https://the1916company.imgix.net/rolex/collection-2026-base/model_gallery_assets/landscape/slides2/m278240-0018.jpg?auto=format,compress&bg-remove=true", "alt": "Image #3", "title": "Image #3" }, { "num": 3, "id": "watch_assets_front_facing", "img": "https://watchbox-sfcc.imgix.net/plp-blank.png?w=90&h=90", "imgportrait": "https://the1916company.imgix.net/rolex/collection-2026-base/model_gallery_assets/portrait/slides3/m278240-0018.jpg?auto=format,compress&bg-remove=true", "imglandscape": "https://the1916company.imgix.net/rolex/collection-2026-base/model_gallery_assets/landscape/slides3/m278240-0018.jpg?auto=format,compress&bg-remove=true", "alt": "Image #4", "title": "Image #4" }, { "num": 4, "id": "watch_assets_front_facing", "img": "https://watchbox-sfcc.imgix.net/plp-blank.png?w=90&h=90", "imgportrait": "https://the1916company.imgix.net/rolex/collection-2026-base/model_gallery_assets/portrait/slides4/m278240-0018.jpg?auto=format,compress&bg-remove=true", "imglandscape": "https://the1916company.imgix.net/rolex/collection-2026-base/model_gallery_assets/landscape/slides4/m278240-0018.jpg?auto=format,compress&bg-remove=true", "alt": "Image #5", "title": "Image #5" } ], "baserefnum": "278240", "rmc": "m278240-0018", "modelname": "Datejust", "spec_diameter": "31 mm", "spec_material": "Oystersteel", "waterresistance": "Waterproof to 100 metres / 330 feet", "spec_movement": "Perpetual, mechanical, self-winding", "spec_precision": "", "spec_dial": "Bright blue", "spec_details": "", "filter_style": "", "spec_clasp": "Concealed folding Crownclasp", "spec_braceletmaterial": "", "metaTitle": "", "metaDescription": "Rolex Datejust 31Oyster, 31 mm, OystersteelM278240-0018", "H1": "", "ranking": "13799", "suggestions": "", "spec_modelcase": "Oyster, 31 mm, Oystersteel", "spec_oysterarchitecture": "", "spec_bezel": "Domed", "spec_windingcrown": "Screw-down, Twinlock double waterproofness system", "spec_crystal": "Scratch-resistant sapphire, Cyclops lens over the date", "spec_calibre": "2236, Manufacture Rolex", "spec_oscillator": "", "spec_escapement": "", "spec_winding": "", "spec_powerreserve": "Approximately 55 hours", "spec_bracelet": "Jubilee, five-piece links", "spec_gem_setting": "", "spec_certification": "Superlative Chronometer (official chronometer certification + Rolex certification after casing)", "filter_dial": "Coloured dial", "filter_size": "Small size", "filter_material": "Oystersteel", "background": "", "how_to_video": "", "how_to_set_copy": "", "familyname": "Datejust", "cfa": "", "cfp": "false", "created": "5/26/2026 3:34:54 PM", "updated": "5/26/2026 3:34:54 PM", "filters": {}, "specs": [ { "id": "rmc", "title": "REFERENCE", "text": "M278240-0018" }, { "id": "spec_modelcase", "title": "MODEL CASE", "text": "Oyster, 31 mm, Oystersteel" }, { "id": "spec_bezel", "title": "BEZEL", "text": "Domed" }, { "id": "waterresistance", "title": "WATER-RESISTANCE", "text": "Waterproof to 100 metres / 330 feet" }, { "id": "spec_movement", "title": "MOVEMENT", "text": "Perpetual, mechanical, self-winding" }, { "id": "spec_calibre", "title": "CALIBRE", "text": "2236, Manufacture Rolex" }, { "id": "spec_powerreserve", "title": "POWER RESERVE", "text": "Approximately 55 hours" }, { "id": "spec_bracelet", "title": "BRACELET", "text": "Jubilee, five-piece links" }, { "id": "spec_dial", "title": "DIAL", "text": "Bright blue" }, { "id": "spec_certification", "title": "CERTIFICATION", "text": "Superlative Chronometer (official chronometer certification + Rolex certification after casing)" } ], "specs01": [ { "id": "rmc", "title": "REFERENCE", "text": "M278240-0018" }, { "id": "spec_modelcase", "title": "MODEL CASE", "text": "Oyster, 31 mm, Oystersteel" }, { "id": "spec_bezel", "title": "BEZEL", "text": "Domed" }, { "id": "waterresistance", "title": "WATER-RESISTANCE", "text": "Waterproof to 100 metres / 330 feet" }, { "id": "spec_movement", "title": "MOVEMENT", "text": "Perpetual, mechanical, self-winding" } ], "specs02": [ { "id": "spec_calibre", "title": "CALIBRE", "text": "2236, Manufacture Rolex" }, { "id": "spec_powerreserve", "title": "POWER RESERVE", "text": "Approximately 55 hours" }, { "id": "spec_bracelet", "title": "BRACELET", "text": "Jubilee, five-piece links" }, { "id": "spec_dial", "title": "DIAL", "text": "Bright blue" }, { "id": "spec_certification", "title": "CERTIFICATION", "text": "Superlative Chronometer (official chronometer certification + Rolex certification after casing)" } ], "features": [ { "title": "Bright blue dial", "text": "The sunray finish creates delicate light reflections on many dials in the Oyster Perpetual collection. It is obtained using masterful brushing techniques that create grooves running outwards from the centre of the dial. Light is diffused consistently along each engraving, creating a characteristic subtle glow that moves depending on the position of the wrist. Once the sunray finish has been completed, the dial colour is applied using Physical Vapour Deposition or electroplating. A light coat of varnish gives the dial its final look.", "img": "https://watchbox-sfcc.imgix.net/plp-blank.png?w=90&h=90&auto=format,compress", "class": "rlx-v7-image--sm rlx-v7-image", "imgType": "dial", "imgportrait": "https://the1916company.imgix.net/rolex/collection-2026-base/model_feature_assets/portrait/dial_portrait/m278240-0018.jpg?auto=format,compress&bg-remove=true", "imglandscape": "https://the1916company.imgix.net/rolex/collection-2026-base/model_feature_assets/landscape/dial_landscape/m278240-0018.jpg?auto=format,compress&bg-remove=true" }, { "title": "Oystersteel", "text": "Rolex uses Oystersteel for its steel watch cases. Specially developed by the brand, Oystersteel belongs to the 904L steel family, alloys most commonly used in high-technology and in the aerospace and chemical industries, where maximum resistance to corrosion is essential. Oystersteel is extremely resistant, offers an exceptional finish once polished and maintains its beauty even in the harshest environments.", "img": "https://watchbox-sfcc.imgix.net/plp-blank.png?w=90&h=90&auto=format,compress", "class": "rlx-v7-image--sm rlx-v7-image rlx-v7-image--bg", "imgType": "material", "imgportrait": "https://the1916company.imgix.net/rolex/collection-2026-base/model_feature_assets/portrait/material_portrait/m278240-0018--060.jpg?auto=format,compress&bg-remove=true", "imglandscape": "https://the1916company.imgix.net/rolex/collection-2026-base/model_feature_assets/landscape/material_landscape/m278240-0018--060.jpg?auto=format,compress&bg-remove=true" }, { "title": "The Jubilee bracelet", "text": "The design, development and production of Rolex bracelets and clasps, as well as the stringent tests they face, involve advanced high technology. And, as with all the components of the watch, aesthetic controls by the human eye guarantee impeccable beauty. The Jubilee, a supple and comfortable five-piece link metal bracelet, was designed and made especially for the launch of the Oyster Perpetual Datejust in 1945.", "img": "https://watchbox-sfcc.imgix.net/plp-blank.png?w=90&h=90&auto=format,compress", "class": "rlx-v7-image--sm rlx-v7-image rlx-v7-image--bg", "imgType": "bracelet", "imgportrait": "https://the1916company.imgix.net/rolex/collection-2026-base/model_feature_assets/portrait/bracelet_portrait/m278240-0018.jpg?auto=format,compress&bg-remove=true", "imglandscape": "https://the1916company.imgix.net/rolex/collection-2026-base/model_feature_assets/landscape/bracelet_landscape/m278240-0018.jpg?auto=format,compress&bg-remove=true" } ], "isInStock": false, "how_to_set_title": "", "linkUrl": "https://assets.rolex.com/api/brochure/en_us/datejust-31/m278240-0018.pdf", "linkText": "Download brochure" }, "rlx-crumbs-dynamic": { "list": [ { "suffix": "", "url": "/rolex/", "alt": "Rolex", "title": "Rolex", "link": "home" }, { "suffix": "", "url": "/rolex/rolex-collection/", "alt": "Rolex Watches", "title": "Rolex Watches", "link": "cgid" }, { "suffix": "", "url": "/rolex/datejust/", "alt": "Datejust", "title": "Datejust", "link": "cgid" }, { "suffix": "", "url": "/rolex/datejust/m278240-0018/", "alt": "M278240-0018", "title": "M278240-0018", "link": "pid" } ], "content": "
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  1. Rolex
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  2. Rolex watches
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  3. Datejust
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  4. M278240-0018
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Rolex Guarantee

To ensure the precision and reliability of its timepieces, Rolex submits each watch after assembly to a stringent series of tests. All new Rolex watches purchased from one of the brand’s Official Retailers come with a five-year international guarantee. When you buy a Rolex, the Official Retailer fills out and dates the Rolex guarantee card that certifies your watch’s authenticity.

The green seal

The five-year guarantee which applies to all Rolex models is coupled with the green seal, a symbol of its status as a Superlative Chronometer. This exclusive designation attests that the watch has successfully undergone a series of specific final controls by Rolex in its own laboratories according to its own criteria, in addition to the official COSC certification of its movement.

Rolex presentation box

Every Rolex is delivered in a beautiful green presentation box that is both protector and keeper of the jewel that nests inside it. As the presentation box is also a symbol of giving, it is important, if you are purchasing a gift, that the recipient’s first contact with their Rolex sets the stage for revealing what lies within.

" }, "rlx-brochure": { "url": "https://assets.rolex.com/api/brochure/en_us/datejust-31/m278240-0018.pdf", "text": "Download brochure" }, "rlx-products": { "content": "
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The Rolex Datejust collection

Make a date of a day

Learn more
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