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REFERENCE
228238
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MODEL CASE
Oyster, 40 mm, yellow gold
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BEZEL
Fluted
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WATER RESISTANCE
Waterproof to 100 metres / 330 feet
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MOVEMENT
Perpetual, mechanical, self-winding
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CALIBRE
3255, Manufacture Rolex
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POWER RESERVE
Approximately 70 hours
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BRACELET
President, semi-circular three-piece links
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DIAL
Onyx set with diamonds
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CERTIFICATION
Superlative Chronometer (COSC + Rolex certification after casing)
Onyx dial
Each dial is a miniature work of art. The colour, reflections and surface texture, along with decorative elements and the overall design give the watch its intrinsic character. Rolex masters all aspects of its dial creation and production in-house. From the initial sketches to the final inspection, including colouring or the application of appliques, the process involves a series of steps and operations that call on specific expertise. Some of these professions – enamelling, for instance – date from the early days of watchmaking. Others are inherent to the use of cutting-edge technologies, such as magnetron sputtering, a complex technique for colouring the surface of a dial by depositing a thin film of material in a vacuum environment. A meeting of traditional skills and technology, the manufacture of Rolex dials perfectly encapsulates the philosophy that guides the brand: seeking the highest level of quality to achieve an impeccable, long-lasting result.
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.
