Rolex Datejust White Rolesor — Silver Index Dial | Ref. 278240

White Rolesor — the pairing of Rolex's Oystersteel with 18-carat white gold — gives the Datejust 31 reference 278240 a cool, contemporary character that renders it equally effective as a dress watch and a daily companion. The white gold components include the domed bezel, the crown, and the centre links of the Oyster bracelet, creating a deliberate tonal dialogue with the surgical-grade 904L steel that forms the case body. The domed bezel, smooth and unadorned, recalls the classical forms of early Datejust references while sitting comfortably within a modern context.

The silver dial is understated in the best possible sense — its sunray-brushed surface provides gentle visual interest without competing with the Chromalight-filled applied index markers that ensure precise time reading. The Calibre 2236 provides the mechanical foundation: a self-winding movement featuring the Syloxi silicon hairspring, stop-seconds adjustment, an instantaneous date mechanism, and approximately 55 hours of power reserve. Rolex subjects every movement leaving its Chêne-Bourg manufacture to a rigorous series of positional timing tests that exceed the requirements of COSC chronometer certification.

The 31 mm Oyster case with its screw-down Twinlock crown achieves water resistance to 100 metres — a meaningful specification that reflects Rolex's origins as the pioneer of the waterproof wristwatch, dating to the Oyster of 1926. The flat three-link Oyster bracelet, with its concealed Oysterclasp, is among the most studied bracelet designs in horology. At $6,900, the reference 278240 represents exceptional value in the Datejust 31 range and an ideal introduction to all-metal Rolex ownership.