Description
Make a date of a day
This Oyster Perpetual Datejust 31 in 18 kt Everose gold features a rosé-colour dial and a President bracelet.
Diamond-set bezel
A sparkling symphony
Gem-setters, like sculptors, finely carve the precious metal to hand-shape the seat in which each gemstone will be perfectly lodged. With the art and craft of a jeweller, the stone is placed and meticulously aligned with the others, then firmly secured in its gold or platinum setting. Besides the intrinsic quality of the stones, several other criteria contribute to the beauty of Rolex gem-setting: the precise alignment of the height of the gems, their orientation and position, the regularity, strength and proportions of the setting as well as the intricate finishing of the metalwork. A sparkling symphony to enhance the watch and enchant the wearer.
Rosé-colour dial
A watchmaking technique
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.
18 kt Everose gold
An exclusive patent
To preserve the beauty of its pink gold watches, Rolex created and patented an exclusive 18 kt pink gold alloy cast in its own foundry: Everose gold. Introduced in 2005, 18 kt Everose is used on all Rolex models in pink gold.
The President bracelet
The ultimate refinement
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 President bracelet, with its semi-circular three piece links, was created in 1956 for the launch of the Oyster Perpetual Day-Date. It represents the ultimate in refinement and comfort and is always made of carefully selected precious metals.
Specifications
| Brand | Rolex |
|---|---|
| Gender | Female |
| AgeGroup | Adult |
| Color | Pink |
| Collection | Datejust |
| Model | Datejust 31 |
| Reference | 278285RBR |
| Case Material | 18 kt Everose gold |
| Case Diameter | 31 mm |
| Size | Small |
| Dial | Rosé-colour |
| Dial Gems | Not gem-set |
| Bracelet | President |
| Bracelet Material | 18 kt Everose gold |
| Clasp | Concealed folding Crownclasp |
| Bezel | Diamond-set |
| Crystal | Scratch-resistant sapphire, Cyclops lens over the date |
| Winding Crown | Screw-down, Twinlock double waterproofness system |
| Water Resistance | Waterproof to 100 metres / 330 feet |
| Oyster Architecture | Monobloc middle case, screw-down case back and winding crown |
| Calibre | 2236, Manufacture Rolex |
| Movement | Perpetual, mechanical, self-winding |
| Functions | Centre hour, minute and seconds hands. Instantaneous date with rapid setting. Stop-seconds for precise time setting |
| Power Reserve | Approximately 55 hours |
| Precision | -2/+2 sec/day, after casing |
| Oscillator | Syloxi hairspring in silicon with patented geometry. High-performance Paraflex shock absorbers |
| Winding | Bidirectional self-winding via Perpetual rotor |
| Certification | Superlative Chronometer (official chronometer certification + Rolex certification after casing) |






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