The Rolex Datejust 31 reference 278344RBR-0018 is a luxury timepiece that combines a 31mm Oystersteel case with an 18k white gold domed bezel set with 24 scattered diamonds. This White Rolesor model features a dark grey rhodium dial with a sunray finish and applied index hour markers. The watch is equipped with a scratch-resistant sapphire crystal and a Cyclops lens for date magnification. It is paired with a five-piece link Jubilee bracelet made of Oystersteel, featuring a concealed folding Crownclasp for a seamless aesthetic.
Powering the timepiece is the self-winding caliber 2236, a manufacture Rolex movement that offers a power reserve of approximately 55 hours and high-performance Paraflex shock absorbers. The movement features a Syloxi hairspring in silicon to ensure stability under temperature variations and resistance to magnetic fields. Functional complications are limited to the center hour, minute, and seconds hands, alongside an instantaneous date display with rapid setting and stop-seconds for precise time adjustment. Its Oyster case employs a Twinlock double waterproofness system, ensuring water resistance to 100 meters.
General reviews of the Datejust 31 emphasize its elegant proportions and the versatility of the rhodium dial, which transitions effectively between formal and casual settings. The scattered diamond bezel, often referred to as the star diamond bezel, is praised for providing a modern and subtle alternative to traditional fully-set diamond bezels. While the 31mm size is highly regarded for its refined fit on smaller wrists, some enthusiasts note that the concealed Crownclasp on the Jubilee bracelet lacks the micro-adjustment features found on Oysterlock clasps, though it is frequently lauded for its comfort and jewelry-like appearance.