All Quarterbacks in the NFL today have helmets equipped with earpieces connected to the coach’s headsets on the sidelines. While this allows the coach to quickly call in plays to the Quarterback that he can then relay to the team, they still sport the “portable playbooks” on their wrist for a reason.

Quarterback wristbands have been traditionally worn by quarterbacks to store football plays on their wrist. This provides an easy way for the coach to call plays into the game, and for the quarterback to easily call the play in the huddle. This same strategy has been adopted to baseball and softball coaches.