The Rolex Datejust reference 278273-0016 features a 31mm case crafted from stainless steel and yellow gold. This model, produced in 2019, is powered by the automatic winding Rolex caliber 2236. It includes a green dial and displays the date function. Additionally, this watch is certified as a chronometer, ensuring precision in timekeeping. The combination of materials and the classic design make it a versatile choice for various occasions.