Bi-metal Rolex Oyster Perpetual Datejust 279381RBR. Case diameter 28mm. Water resistant to 100 meters. Automatic Chronometer movement, Rolex Caliber 2236. Power reserve of 55 hours. Sundust dial with index hour markers and diamond set bezel. Scratch-resistant sapphire crystal with cyclops date lens. Steel and 18 ct Everose gold oyster bracelet. Folding oysterclasp with comfort extension link. Box and papers dated August 2018.