The Rolex Lady-Datejust ref: 279138RBR-0021 features a 28mm case crafted from yellow gold. It is powered by the automatic winding Rolex caliber 2235 movement, ensuring precise timekeeping. This model includes a date function and is certified as a chronometer. The watch is adorned with gold elements, enhancing its overall aesthetic. The combination of these features makes it a notable choice for those seeking a reliable and elegant timepiece.