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Rolex Datejust 31 White Rolesor — Dark Grey Diamond Dial | Ref. 278344RBR

Rolex

Rolex Datejust 31 White Rolesor — Dark Grey Diamond Dial | Ref. 278344RBR

Reference: 278344RBR

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About This Watch

The Datejust 31 reference 278344RBR exemplifies Rolex's approach to the mid-size category — a 31mm case that sits convincingly on a range of wrist sizes while offering a level of material and decorative complexity reserved for dedicated jewellery references. White Rolesor — Rolex's proprietary combination of Oystersteel and 18-carat white gold — gives this piece its characteristic two-tone character: the case middle in steel, the bezel and crown in white gold. A 24-diamond domed bezel sets the perimeter, while the dark grey dial, itself set with diamond hour markers, creates a sharp tonal contrast that reads as contemporary and assured.

Powering the 278344RBR is the Calibre 2236, Rolex's self-winding movement developed specifically for the mid-size Datejust and Lady-Datejust. It features a Syloxi silicon hairspring — offering improved resistance to magnetic fields and temperature variation — and operates at 28,800 vph with a 55-hour power reserve. The domed bezel profile on this RBR variant adds three-dimensional interest to the case profile, distinguishing it from the flat diamond-set options. The Jubilee bracelet, with its five-piece link construction, provides a supple and comfortable fit appropriate to the watch's dress-oriented purpose.

This reference occupies an interesting market position: technically it is a mid-size ladies' or unisex piece, yet its dark grey diamond dial and diamond bezel give it a stronger presence than many entry-level diamond Rolex references. Buyers who value understated restraint in a gem-set watch — preferring tone-on-tone to high contrast — will find the 278344RBR particularly well resolved. Secondary market demand for Rolesor Datejust 31 references with diamond dials remains consistent, supported by the breadth of the Datejust's collector base.

Specifications

BrandRolex
SeriesDatejust
Model Number278344RBR
Case Size31 mm
Dial ColorWhite Rolesor Domed 24 Diamond Bezel Dark Grey Diamond