Concept II model E with PM4 monitor  Ref: Concept E
	The Concept2 model D Indoor Rowers come with the PM4. These monitors are also available as a retrofit for older Indoor Rowers. The PM4 includes all of the features of the PM3 plus these additional features: The PM4 has increased memory capacity to allow for future expansion and features. The PM4 has the on-board computing power to support machine to machine racing, both wireless and wired.