Rolex Datejust 31 White Rolesor — White Roman Dial, Fluted Bezel | Ref. 278274

Reference 278274 belongs to the current-generation Datejust 31 lineup, presenting in White Rolesor — Rolex's two-tone construction that pairs an Oystersteel case body with 18 ct white gold lugs, bezel, and crown. The white Roman numeral dial, with its classical letterform hour markers, lends this configuration a timeless, formal quality, while the fluted bezel underscores the precious-metal character of the specification.

Under the caseback runs Calibre 2236, Rolex's newest self-winding manufacture movement for the Datejust 31 and Lady-Datejust, introduced with the current reference generation. Cal 2236 incorporates the Syloxi hairspring — a silicon-based component developed by the Rolex research department — which provides exceptional resistance to magnetic fields and temperature variation while maintaining superior isochronism. The Oystersteel case, rendered in Rolex's 904L alloy for superior corrosion resistance, is sealed to 100 metres water resistance via the Triplock or Twinlock crown system. The Jubilee bracelet, with its characteristic five-piece link design, complements the two-tone material palette.

The 278xxx reference series marks the transition to the Syloxi hairspring-equipped Cal 2236, making these current-generation examples technically superior to their 178xxx predecessors. For collectors and buyers seeking a two-tone Datejust 31 that combines formal Roman numeral dial design with the latest movement technology, Ref. 278274 is among the clearest choices in this segment.