The Rolex Datejust 31 reference 278243-0027 is a mid-size luxury timepiece that combines durability with refined materials. The 31mm case is crafted from Yellow Rolesor, a signature Rolex marriage of 904L Oystersteel and 18 kt yellow gold. This model features a white mother-of-pearl dial, which is naturally unique in its texture and hue, and is set with 10 diamonds in 18 kt gold settings to serve as hour markers. The watch is topped with a smooth yellow gold bezel and protected by a scratch-resistant sapphire crystal featuring the Cyclops lens for date magnification. It is paired with a three-piece link Oyster bracelet that includes a folding Oysterclasp and the Easylink 5mm comfort extension system.
Powering the timepiece is the manufacture caliber 2236, a self-winding mechanical movement that is COSC certified and further tested by Rolex to a precision of -2/+2 seconds per day. The movement features a patented Syloxi hairspring in silicon, providing high resistance to magnetic fields and temperature variations. Its complications are focused on essential timekeeping, including center hour, minute, and seconds hands, along with an instantaneous date display at the 3 o’clock position that allows for rapid setting. The watch also features a stop-seconds function for precise time adjustment and provides a power reserve of approximately 55 hours. With a Twinlock double waterproofness system, the case is water-resistant to 100 meters.
General reviews for the Datejust 31 often highlight its versatility as a daily-wear watch that transitions easily from casual to formal settings. Collectors and critics frequently praise the mother-of-pearl dial for its organic beauty and the fact that no two dials are identical. The 31mm size is widely regarded as a modern classic for women’s wrists, offering more presence than traditional lady models while maintaining elegant proportions. While the smooth bezel provides a cleaner, more contemporary look compared to the traditional fluted bezel, some enthusiasts note that the polished surfaces of the yellow gold center links and bezel can be prone to visible fine scratches over time with regular use.