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technical details
| Reference ： 228238 |
| Model case： Oyster, 40 mm, yellow gold |
| Bezel： Fluted |
| Water-resistance： Waterproof to 330 feet / 100 metres |
| Movement： Perpetual, mechanical, self-winding |
| Caliber： 3255, Manufacture Rolex |
| Power reserve： Approximately 70 hours |
| Bracelet： President, semi-circular three-piece links |
| Dial： Green ombré |
| Certification： Superlative Chronometer (COSC + Rolex certification after casing) |
Fluted bezel
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.
Green ombré dial
The version presented, in 18 kt Everose gold, introduces slate ombré dial – a completely new hue for such a dial, whose surface, coloured at the centre, progresses to a deep black around the edge. Also appearing for the first time on the ombré dial of this watch are faceted, deconstructed Roman numerals and faceted index hour markers in 18 kt pink gold. Until now, Rolex ombré dials were set with diamond hour markers and were reserved for the Day-Date 36. 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.
18 kt yellow gold
By operating its own exclusive foundry, Rolex has the unrivalled ability to cast the highest quality 18 kt gold alloys. According to the proportion of silver, copper, platinum or palladium added, different types of 18 kt gold are 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.