The Rolex Datejust 31 reference 278383RBR-0004 is an elegant mid-size luxury timepiece that combines the durability of Oystersteel with the prestige of 18k yellow gold, a combination Rolex terms Yellow Rolesor. This model features a 31mm Oyster case equipped with a winding crown using the Twinlock double waterproofness system and a scratch-resistant sapphire crystal with a Cyclops lens for date magnification. The aesthetic is defined by a fixed bezel meticulously set with diamonds and a silver sunray dial. The dial is characterized by yellow gold Roman numeral hour markers, with a prominent diamond-set VI at the 6 o’clock position, creating a balanced and luminous display.
At the heart of the watch is the high-performance caliber 2236, a self-winding mechanical movement manufactured entirely by Rolex. This movement incorporates a patented Syloxi hairspring in silicon, which provides exceptional resistance to magnetic fields and temperature variations, and Paraflex shock absorbers for increased reliability. The caliber offers a power reserve of approximately 55 hours and maintains a precision of -2/+2 seconds per day after casing, earning it the Superlative Chronometer certification. The timepiece is paired with a five-piece link Jubilee bracelet, known for its comfort and supple fit, and is secured by a concealed folding Crownclasp.
General reviews of the Datejust 31 highlight its versatility as both a dress and everyday watch, particularly praising the refined proportions that suit a variety of wrist sizes. The inclusion of the diamond-set bezel and the diamond VI marker are frequently noted for adding a sophisticated level of brilliance without being overly ostentatious. Owners and enthusiasts often commend the robustness of the Oyster case, which ensures water resistance up to 100 meters, making it a practical choice for a luxury accessory. While some collectors prefer the larger 36mm or 41mm models, the 31mm version is widely regarded as a classic staple in the Rolex catalog for those seeking a more traditional and feminine profile.