I have been out with it 4 days now.This last time was the volley ball sand pit again..I wanted to try all metal and full tilt on the sensitivity..Deepest item was a bottle cap at 13 inches measured.Smallest, an earring clip 3/16,by 3/16 metal. Two gold earrings, both with diamonds..,One, a very good item Another $1.29 in clad coins.Really deep. Then as I was leaving , SIR started to find very sharp,very rusty nails..I dug four, and knew the next signal was five, and the Jeep pulled up with SECURITY written all over the door. "You know we have a rule that metal detectors are considered trespassing.".. Yep, I've been doing some work for the Archivist ,got this little guy and wanted to wring it out in the sand pile.. Keeping your kids safe. Showed him the nails, dug the signal, and mentioned that the kids were going barefoot. "Hey, no problem, find all the nails,",,,,and, he left..Now, I don't give a rat's behind what any of you think, I believe SIR led me to those nails,, to set the security guard up..The timing was that perfect...Fall is going to come early.I think that SIR and I are going to have a ball before the season closes....Cordially NAD.