The Rolex Datejust ref: 278343RBR-0017 features a 31mm case crafted from a combination of yellow gold and stainless steel. This model, produced in 2018, is powered by the automatic winding Rolex caliber 2236. The watch showcases a grey dial and includes a date function. It is certified as a chronometer, ensuring precision in timekeeping. The design reflects Rolex's commitment to quality and functionality.