The Rolex Datejust ref: 278384RBR-0021 features a 31mm case crafted from a combination of white gold and stainless steel. This model, produced in 2020, is powered by the automatic winding Rolex caliber 2236. It showcases a green dial and includes a date function. Additionally, this watch is certified as a chronometer, ensuring precision in timekeeping. The design reflects Rolex's commitment to quality and performance.