GoldRushTradingPost
Tenderfoot
By changing the pitches on its Golden uMax metal detector, Tesoro has made it easier to distinguish all 4 tones clearly, which makes it easier to identify targets. Starting with the serial number 190900 (the manual has Rev 2.0 on the cover), all Golden uMax detectors have these new and improved tones. The lower tones better identify potential trash and higher tones reflect valuable targets such as silver and nickel. If you already own a Golden uMax metal detector and want to have the tones changed, Tesoro will do that for you for $50. More about the tone change and how to properly set up any Golden uMax detector at http://www.goldrushtradingpost.com/prospecting_blog