Wrist watches nowadays tend to make themselves unique in order to be interesting. Some manufacturers try to capture a certain market segment that hopefully is not yet that fully utilized by the others. In the case of the F Stop Watch, this segment may be professional and amateur photographers.
The F Stop Watch may appeal to many photographers in that its watch face is designed not merely by the usual numbers but by the relative aperture digits that most photographers are more familiar with. But it can also be relatively easy for non-photographers to tell time with it just by the position of the hour and minute arms. But just the same, the design of the watch face makes it quite unique. The F Stop Watch is available at Neatoshop for US$36.