I'am a bit confused is the Discrimmination on the Exploer SE pre set or do you set it your self on relic -coin -etc.looking at up-grading to Mine lab very soon.I set discrimmination now on MXT but not sure about MIneLAB SE.Been relic Hunting for over 15yrs and i like what i've heard about the Exploer Se PRO. Any help whould be Great.JIM