The Rolex Datejust reference 278343RBR-0018 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 integrates both elegance and functionality, making it a versatile choice for various occasions.