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Detail
Reference
278240Model case
Oyster, 31 mm, OystersteelBezel
DomedWater-resistance
Waterproof to 100 metres / 330 feetMovement
Perpetual, mechanical, self-windingCalibre
2236, Manufacture RolexPower reserve
Approximately 55 hoursBracelet
Oyster, three-piece solid linksDial
SilverCertification
Superlative Chronometer (COSC + Rolex certification after casing)Silver 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.MODEL AVAILABILITY
All Rolex watches are assembled by hand with the utmost care to ensure exceptional
quality. Such high standards naturally restrict Rolex production capacity and, at times,
the demand for Rolex watches outpaces this capacity. Therefore, the availability of
certain models may be limited. New Rolex watches are exclusively sold by Official
Rolex Retailers, who receive regular deliveries and independently manage the
allocation and sales of watches to customers. Panda is proud to be part of the
worldwide network of Official Rolex Retailers and can provide information on the
availability of Rolex watches. -
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Datejust 31 – M278240-0005