- Rolex
- Rolex watches
- Datejust
- M278240-0015
Rolex
Datejust 31
Oyster, 31 mm, Oystersteel
Reference: 278240
Michael Spiers Plymouth: 01752 661981
Michael Spiers Truro: 01872 272264
Michael Spiers Exeter: 01392 666590
Michael Spiers Taunton: 01823 333152
- Reference 278240
- Dial Dark grey
- Bracelet Oyster, three-piece solid links
- Model case Oyster, 31 mm, Oystersteel
- Material Oystersteel
- Movement Perpetual, mechanical, self-winding
- Calibre 2236, Manufacture Rolex
- Bezel Domed
- Crystal Scratch-resistant sapphire, Cyclops lens over the date
- Power reserve Approximately 55 hours
- Water-resistance Waterproof to 100 metres / 330 feet
- Certification Superlative Chronometer (COSC + Rolex certification after casing)
Dark Grey Dial
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.
Oystersteel
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.
The Oyster bracelet
The Oyster bracelet is a perfect alchemy of form and function, aesthetics and technology, designed to be both robust and comfortable. It is equipped with an Oysterclasp and the Easylink comfort extension link, also exclusive to Rolex. This ingenious system allows the wearer to increase the bracelet length by approximately 5 mm, providing additional comfort in any circumstance.
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