It requires 0 MP to use, so equipping it comes at no cost. It can help with finding some of the more obscure collectibles.
How to Acquire
When Chapter 3 ends, Doctor H.B.'s lab can be visited to unlock the B.O.S.S. by presenting the Explorer Permit. Either 3 waves of Boss Rush or 6 waves of Mini-Boss Rush must be completed to receive this medal.