Dang, My new Infinium dies again this morning just about a hour after beginning my hunt. Same problem as it had when new a little over a month ago. The first one worked fine dry but as soon as you ducked your head underwater it went crazy. some sort of interaction between the UW headphones and the coil. It would always work fine till the headphones got submerged. Garrett replace the whole thing as it was brand new. The new unit along with UW headphones worked fine for just over a month and several hunts. I guess the headphones are the problem but I will talk with Garrett tomorrow. I am sure they will want the whole mess back again and i will lose a month of it's use. Very disappointing again. I was just beginning to like it. fortunately I have my CZ's ready to go. It still works when dry but that is not why i own it.