When you maintain your combat focus, you have an uncanny ability to sense the ebb and flow of your opponents' vitality. As you attain greater mastery of this fighting style, you learn to sense a foe's presence even with your eyes closed.

Combat Focus, WIS 13

While maintaining your combat focus, you receive benefits of Blind-Fight feat. If you have three or more combat form feats, you gain blindsense out to 5 feet while maintaining your combat focus.

This feat counts as Blind-Fight feat for purposes of meeting prerequisites.