Fisher Labs M9711 Metal Detector - Valve and Box Locator 11 with auto retune
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Automatic Retune Button Sensitivity Selector
Manual Ground Compensation Headphone Jack
Takes 2 x 9V Batteries
Weight 39lbs Operating Frequency 45kHz
Battery Life Alkaline 25 - 35 hours Dimensions Length 38 to 50 adjustable 96cm to 127cm
