The Rolex Datejust 31 reference 278274-0025 is a mid-size luxury timepiece that combines a 31mm Oystersteel case with an 18k white gold fluted bezel, a signature Rolex combination known as White Rolesor. This model is distinguished by its aubergine purple dial, which features a sunray finish and 18k gold Roman numeral hour markers, including a large VI set with 11 diamonds. The watch is equipped with a three-piece link Oyster bracelet crafted from solid Oystersteel, featuring a folding Oysterclasp and the Easylink 5mm comfort extension system for adjustable sizing.
Technically, the watch is powered by the in-house caliber 2236, a self-winding mechanical movement that is COSC-certified as a Superlative Chronometer. It incorporates a patented Syloxi hairspring in silicon, which provides high resistance to magnetic fields and temperature variations, alongside high-performance Paraflex shock absorbers. The movement offers a power reserve of approximately 55 hours and supports complications including center hour, minute, and seconds hands, as well as an instantaneous date window at the 3 o’clock position magnified by a Cyclops lens. Its architecture includes a monobloc middle case, a screw-down winding crown with a Twinlock double waterproofness system, and a scratch-resistant sapphire crystal, ensuring water resistance to 100 meters.
General reviews of the Datejust 31 often emphasize its versatile proportions, noting that the 31mm size provides a more significant wrist presence than the smaller Lady-Datejust while maintaining a refined aesthetic suitable for both formal and daily wear. The aubergine dial is frequently praised for its deep, rich color and the unique light reflections created by its sunray finish. While the watch is highly regarded for its robust build and the technical excellence of the caliber 2236, some reviewers note that this specific configuration lacks luminescent material on the dial, making it difficult to read in low-light conditions. Overall, it is considered a classic representation of Rolex’s enduring style and mechanical reliability.