The Rolex Datejust 31 reference 278343RBR-0020 is a mid-size luxury timepiece that combines professional-grade Oystersteel with 18kt yellow gold, a signature Rolex pairing known as Yellow Rolesor. The 31mm Oyster case features a monobloc middle construction with a screw-down case back and a Twinlock winding crown, ensuring water resistance up to 100 meters. This model is distinguished by its sunray silver dial, which is adorned with ten diamonds set in 18kt gold settings, and a domed bezel set with 24 diamonds. It is paired with a five-piece link Jubilee bracelet, which is known for its suppleness and comfort, and secured with a concealed folding Crownclasp.
At the heart of this timepiece is the caliber 2236, a self-winding mechanical movement entirely developed and manufactured by Rolex. This movement incorporates the patented Syloxi hairspring in silicon, which provides high resistance to magnetic fields and remains stable during temperature variations. The watch offers essential complications, including central hour, minute, and seconds hands, along with an instantaneous date window at the 3 o’clock position magnified by a Cyclops lens. It provides a power reserve of approximately 55 hours and is certified as a Superlative Chronometer, indicating a precision of -2/+2 seconds per day after casing.
General reviews of the Datejust 31 highlight its versatility as a “mid-size” option that appeals to those seeking a balance between the smaller Lady-Datejust and the larger 36mm models. The 278343RBR iteration is frequently praised for its refined aesthetics, specifically the interplay between the warm yellow gold and the brilliant diamond settings on both the bezel and dial. Owners often commend the Jubilee bracelet for its iconic look and ergonomic fit, making it suitable for both formal and daily wear. While the diamond-set bezel adds a significant decorative element, the watch maintains its reputation for durability and mechanical reliability characteristic of the Datejust collection.