The Rolex Datejust ref: 278289RBR-0011 features a 31mm case crafted from white gold. This model, produced in 2020, is powered by the automatic winding Rolex caliber 2236. It showcases a black dial and includes a date function. Additionally, this watch is certified as a chronometer, ensuring precision in timekeeping. The combination of materials and design elements makes it a notable piece in the Datejust collection.