{"id":5711,"date":"2026-03-14T09:26:02","date_gmt":"2026-03-14T09:26:02","guid":{"rendered":"https:\/\/aercana.com\/product\/a-rolex-day-date-40-oyster-40-mm-yellow-gold-2\/"},"modified":"2026-04-04T07:03:31","modified_gmt":"2026-04-04T07:03:31","slug":"a-rolex-day-date-40-oyster-40-mm-yellow-gold-2","status":"publish","type":"product","link":"https:\/\/aercana.com\/fr\/product\/a-rolex-day-date-40-oyster-40-mm-yellow-gold-2\/","title":{"rendered":"A- Rolex Day-Date 40 Oyster, 40 mm, yellow gold"},"content":{"rendered":"

Model Case<\/strong><\/h2>\n

Model case:<\/strong>
Oyster, 40 mm, yellow gold<\/p>\n

Oyster architecture:<\/strong>
Monobloc middle case, screw-down case back and winding crown<\/p>\n

Diameter:<\/strong>
40 mm<\/p>\n

Material:<\/strong>
18 ct yellow gold<\/p>\n

Bezel:<\/strong>
Fluted<\/p>\n

Winding crown:<\/strong>
Screw-down, Twinlock double waterproofness system<\/p>\n

Crystal:<\/strong>
Scratch-resistant sapphire, Cyclops lens over the date<\/p>\n

Water resistance:<\/strong>
Waterproof to 100 metres \/ 330 feet<\/p>\n

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Movement<\/strong><\/h2>\n

Movement:<\/strong>
Perpetual, mechanical, self-winding<\/p>\n

Calibre:<\/strong>
3255, Manufacture Rolex<\/p>\n

Precision:<\/strong>
-2\/+2 sec\/day, after casing<\/p>\n

Functions:<\/strong>
Centre hour, minute and seconds hands.
Instantaneous day and date in apertures, secure rapid-setting.
Stop-seconds for exact time setting<\/p>\n

Oscillator:<\/strong>
Paramagnetic blue Parachrom hairspring.
High-performance Paraflex shock absorbers<\/p>\n

Winding:<\/strong>
Bidirectional self-winding via Perpetual rotor<\/p>\n

Power reserve:<\/strong>
Approximately 70 hours<\/p>\n

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Fluted bezel<\/h2>\n

The Rolex fluted bezel is a mark of distinction. Originally, the fluting of the Oyster bezel had a functional purpose: it served to screw the bezel onto the case helping to ensure the waterproofness of the watch. It was therefore identical to the fluting on the case back, which was also screwed onto the case for waterproofness, using specific Rolex tools. Over time, the fluting became an aesthetic element, a genuine Rolex signature feature. Today the fluted bezel is a mark of distinction, in gold on this Day-Date 40.<\/p>\n<\/div>\n<\/div>\n

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Green ombr\u00e9 dial<\/h2>\n

The ombr\u00e9 dial features a coloured surface at the centre, progresses to a deep black around the edge. This dial represents the continuity of a design that Rolex introduced in the 1980s and relaunched in 2019. The manufacture of these dials with a concentric gradient involves the application of black lacquer, a delicate operation overseen by a specialist whose task it is to ensure the harmonious transition from colour to darkness.<\/p>\n<\/div>\n<\/div>\n

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18 kt yellow gold<\/h2>\n

By operating its own exclusive foundry, Rolex has the unrivalled ability to\u00a0cast the highest quality 18 kt gold alloys. According to the proportion of\u00a0silver, copper, platinum or palladium added, different types of 18 kt gold\u00a0are obtained: yellow, pink or white. They are made with only the purest metals and meticulously inspected in an in-house laboratory with state-of-the-art equipment, before the gold is formed and shaped with the same painstaking attention to quality. Rolex’s commitment to excellence begins at the source.<\/p>\n<\/div>\n<\/div>\n

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Model Case Model case:Oyster, 40 mm, yellow gold Oyster architecture:Monobloc middle case, screw-down case back and winding crown Diameter:40 mm Material:18 ct yellow gold Bezel:Fluted Winding crown:Screw-down, Twinlock double waterproofness system Crystal:Scratch-resistant sapphire, Cyclops lens over the date Water resistance:Waterproof to 100 metres \/ 330 feet Movement Movement:Perpetual, mechanical, self-winding Calibre:3255, Manufacture Rolex Precision:-2\/+2 sec\/day, […]\n","protected":false},"featured_media":5712,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[131],"product_cat":[29,46],"product_tag":[],"class_list":{"0":"post-5711","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-rolex","7":"product_cat-day-date","8":"product_cat-rolex","10":"first","11":"instock","12":"sale","13":"purchasable","14":"product-type-variable","15":"has-default-attributes"},"_links":{"self":[{"href":"https:\/\/aercana.com\/fr\/wp-json\/wp\/v2\/product\/5711","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aercana.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/aercana.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/aercana.com\/fr\/wp-json\/wp\/v2\/comments?post=5711"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aercana.com\/fr\/wp-json\/wp\/v2\/media\/5712"}],"wp:attachment":[{"href":"https:\/\/aercana.com\/fr\/wp-json\/wp\/v2\/media?parent=5711"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/aercana.com\/fr\/wp-json\/wp\/v2\/product_brand?post=5711"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/aercana.com\/fr\/wp-json\/wp\/v2\/product_cat?post=5711"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/aercana.com\/fr\/wp-json\/wp\/v2\/product_tag?post=5711"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}