Preferably, a dress watch is around the small facet, normally 40mm or much less, thin so as to in good shape easily under a cuff and may feature some polished metallic. Although monochromatic types are Harmless, traditional and flexible, hues like blue and gold in many cases are also acceptable. https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/