Rolex Datejust 31 White Rolesor — Diamond Bezel, White Roman Dial | Ref. 278384RBR

Reference 278384RBR belongs to the current generation of the Datejust 31, introduced alongside the updated 278xxx series. In White Rolesor — Oystersteel case paired with 18ct white gold bezel, crown, and Jubilee bracelet centre links — the watch presents a cooler, more restrained aesthetic than its yellow gold counterpart. The diamond-set bezel provides gem-set presence without the full visual weight of an all-precious-metal case, while the white Roman dial grounds the design in a classical tradition that has defined dressy Datejust variants for decades.

The Calibre 2236 powers this reference, featuring the Syloxi silicon hairspring for improved magnetic resistance and isochronism. At 55 hours, the power reserve extends meaningfully beyond the previous generation's 2235 movement, and the COSC certification ensures performance within ±4 seconds per day. The Jubilee bracelet — a five-piece link design first introduced on the original 1945 Datejust — remains one of watchmaking's most ergonomically refined bracelets, conforming naturally to the wrist's curvature.

The 278384RBR occupies the premium tier of the 31mm range, commanding attention through its combination of diamond bezel, precious metal accents, and current-generation movement. It is a compelling choice for collectors seeking a mid-size Datejust that carries genuine gem-set value while remaining mechanically up to date.