First: Suffix - wrong info.
Second: Extra - miss ring.
Third: Extra - runearm - wrong info.
I recheck this. Too much errors...
Fourth: devs says, that CC items like random -> its easy to find belt with insightful con. So, make report about bug in game.
If you mean "concentration" (not constitution):
I don't see it extra belt:
Extra belt:
INS Concentration: