How can I tell the Seamaster Pro fullsize, midsize, automatic and quartz models apart?
The numerous variations in the Seamaster Professional Diver models can be hard to tell apart. The features on the two men’s sizes available on the Seamaster Professional Diver are both scaled to not appear significantly different. The mid-size even uses a slightly narrower bracelet (18mm instead of 20mm) and a somewhat smaller clasp to keep the whole watch looking the same. So, how can you tell them apart? First, there is a visual difference in the position of the date window between the quartz and automatic movements. The date window on the quartz movement is a millimeter or so closer to the center of the dial. Second, the smaller case on the mid size means the right edge of the date window will be about 1.5 millimeters closer to the edge of the dial than it is on the full size case. Combined, these two factors give a different position of the date window on each of the four case size/movement variations on this watch.