I ordered my etrac from kellyco and 2 days latter it was delivered to my house , now that's service. I couldn't wait to try it so I killed all the remotes in the house at the risk of death to make it happen . after just twenty minutes in my yard over ground that I have detected at least 30 times with my atpro I got two of the oldest pennies that I have found an old alum play coin and what looks like an old musket ball {but I doubt it}. all these were found at a minimum of 6 inches deep. I have a lot to learn but a good start.