The Rolex Datejust 31 reference 278273-0024 is a mid-size luxury timepiece that combines the durability of Oystersteel with the prestige of 18k yellow gold, a signature Rolex combination known as Yellow Rolesor. This model features a 31mm Oyster case equipped with a screw-down crown and a Twinlock double waterproofness system, ensuring a water resistance depth of 100 meters. The aesthetic is defined by a classic fluted bezel in yellow gold and a unique black mother-of-pearl dial, which is adorned with ten diamonds set in 18k gold settings. Protecting the dial is a scratch-resistant sapphire crystal featuring the iconic Cyclops lens for easy reading of the date.
At the heart of the watch is the manufacture caliber 2236, a self-winding mechanical movement that is a certified Superlative Chronometer, offering a precision of -2/+2 seconds per day after casing. This movement incorporates a Syloxi hairspring in silicon for enhanced resistance to magnetic fields and temperature variations, alongside high-performance Paraflex shock absorbers. The watch provides essential functions including central hours, minutes, and seconds, as well as an instantaneous date display with rapid setting and stop-seconds for precise time adjustment. It boasts a power reserve of approximately 55 hours and is paired with a five-piece link Jubilee bracelet featuring a concealed folding Crownclasp.
General reviews of the reference 278273-0024 emphasize its balance of elegance and practicality, noting that the 31mm size offers a versatile presence for those who find the standard Lady-Datejust too small and the Datejust 36 too large. The black mother-of-pearl dial is frequently praised for its natural variation and depth, making each individual timepiece unique. While it is highly regarded for its robust construction and high-quality movement, some collectors note that the use of a concealed clasp on the Jubilee bracelet, while aesthetically seamless, lacks the micro-adjustment capabilities found on larger Oysterlock clasps. Overall, it is considered a premier choice for a sophisticated everyday watch that retains strong value and timeless style.