Two more questions and thanks so much so far. I see suggestions are for sensitivity at auto? This is more advisable then around 6? Also, I set up a test area with rings, junk and coins. I used one of my wife's real old thin gold rings, and it sounded almost exactly like the bottle cap. I've seen guys at Coney Island completely avoid bottle caps when I would have 80 to 100 of them with my Beach Hunter ID. Are they missing some gold? Do I still did the signals I'm pretty sure are bottle caps? Des in Buffalo