The Rolex Datejust ref: 278343RBR-0019 features a combination of yellow gold and stainless steel in its 31mm case. This model, produced in 2018, is powered by the automatic winding Rolex caliber 2236. The silver dial includes a date function and is certified as a chronometer, ensuring precision in timekeeping. The watch is designed to offer both durability and elegance, making it a versatile choice for various occasions.