Seiko Automatic Diver Titanium SKX405K Cal. 7S26

The changing Dial
This picture gives you an idea of the changing character of the dial. The
dial is radially polished and the little grooves reflect light differently when
changing the viewing angle. The dial does not really change the color, but
certain areas appear darker or brighter. In direct sunlight, the dial is really
shimmering, particularly nice to look at.