Ok, I think I understandMaybe I'll do a youtube search and see if someone explains it with a video so I can actually hear the sounds. But after asking this question, I did some more reading and I started looking at the Garrett GTP 1350. It says on the website, that it has a "audible belltone ring" for coins also. I assume that this is the same thing as the 250? But what I have been having problems with is "ghost signals" with my GTA500. I'll get a good loud tone, and it says 1" deep. So I get out the plug cutter, cut down about 2" and nothing.Then I keep digging to 6" and still nothing. Fill in the hole and start looking some where else. That has been a common thing here lately. I did finally learn when I get a signal, how to tell if it's a large item like a smashed can,lid,etc or not, so as not to dig while coin shooting. If I swing the coil over the beep, then move forward a inch or 3 and backwards a inch or 3 and it keeps beeping, I don't dig it. But looking at the 1350, I see if also has the small, medium and large visual target identifier on the LCD screen. Can someone that has one of these 1350's clue mein on this aspect? Garrett Factory is less than a hour away from me.