A compact expression of the Rolex Datejust, reference 178240 distills the line's enduring appeal into a crisp 31mm stainless steel case with a clean silver dial. The monochrome palette keeps the look restrained and versatile, leaning on proportion and finish rather than contrast. An automatic movement and date display deliver the practical architecture collectors expect from the model. At 10.5mm thick, it wears with the balanced, easy profile that defines the Datejust.