The Rolex Datejust 31 reference 278341RBR-0016 is a sophisticated mid-size luxury watch featuring a 31mm Everose Rolesor case, which combines the durability of Oystersteel with the elegance of 18k Everose gold. This model is distinguished by its sunray silver dial adorned with diamonds in 18k gold settings and a polished Everose gold bezel set with 24 diamonds. The timepiece is paired with a five-piece link Jubilee bracelet, known for its comfort and supple fit, and is equipped with a concealed folding Crownclasp. The watch’s Oyster architecture includes a monobloc middle case, a screw-down case back, and a Twinlock winding crown, ensuring water resistance up to 100 meters.
Internally, the watch is powered by the high-performance caliber 2236, a self-winding mechanical movement manufactured by Rolex. This COSC-certified movement features a Syloxi hairspring in silicon and Paraflex shock absorbers, providing a power reserve of approximately 55 hours and maintaining a precision of -2/+2 seconds per day. Its primary complications include center hour, minute, and seconds hands, along with an instantaneous date display at the 3 o’clock position that is magnified by a scratch-resistant sapphire Cyclops lens.
General reviews of the Datejust 31 series highlight its versatility as a timeless piece that bridges the gap between a dress watch and a daily wearer. Enthusiasts often praise the Everose Rolesor for its warm, distinctive hue and the inclusion of high-tech components like the Syloxi hairspring, which offers superior resistance to magnetic fields and temperature variations. While the 31mm size is frequently lauded for its balanced proportions on smaller wrists, some reviews note that the concealed Crownclasp lacks the micro-adjustment features found on Oyster bracelets, though the Jubilee’s overall ergonomics remain highly regarded.