I just finished reading the Watchmen in anticipation of the upcoming blockbuster film adaptation. Before legions of you shout, "I don't get it?" Watchmen is one the most critically acclaimed comics of all time. I know most of you won't care about that, but me and the other nerds will.
This is a pun based joke on the name "Watchmen." Each of these watches represents one of the book's main characters. They are also symbolically placed, again with allusion to the storyline.
If none of that matters- then hey, its a design with some cool watches!