The Rolex Datejust 31 reference 278343RBR-0026 is a luxury timepiece that combines durability with high-end materials, featuring a 31mm case crafted from Yellow Rolesor, which is a signature Rolex blend of Oystersteel and 18k yellow gold. This model is distinguished by a sunray-finished champagne dial set with factory diamonds in 18k gold settings. The aesthetic is further enhanced by a domed 18k yellow gold bezel set with 24 diamonds. It is paired with a five-piece link Jubilee bracelet that utilizes a concealed folding Crownclasp, maintaining a seamless look around the wrist.
Technically, the watch is powered by the manufacture calibre 2236, a self-winding mechanical movement that provides a power reserve of approximately 55 hours. This movement features a Syloxi hairspring in silicon and high-performance Paraflex shock absorbers to ensure precision and reliability. The watch includes a central hour, minute, and seconds display, along with an instantaneous date window located at the 3 o’clock position, magnified by a Cyclops lens on the scratch-resistant sapphire crystal. Its Oyster case construction, featuring a screw-down winding crown with the Twinlock double waterproofness system, guarantees water resistance up to 100 meters.
General reviews of the reference 278343RBR-0026 emphasize its versatile mid-size diameter, which is often cited as an ideal balance for various wrist sizes. The combination of the champagne dial and diamond-set bezel is frequently praised for its classic elegance and ability to transition from daily wear to formal occasions. While the timepiece is highly regarded for its robust build quality and the prestige of factory-set gems, some collectors note that the 31mm size may feel small for those accustomed to modern sport watch proportions. Overall, it is considered a premier example of the Datejust’s enduring design, valued for its mechanical sophistication and refined jewelry-like appearance.