I’m drawn to ultra legible, simple, military-style watches for whatever reason. The 556a is sort of an attainable grail watch for me. Maybe there are “better” watches that achieve the above but the first time I saw one my thought was “I gotta have one of these someday”.
I don’t know much about the rest of the Sinn lineup but that’s my take on the 556a anyway.
I don’t know if Flacco was the OG but man did they make a nice living on the underthrown deep ball.