Teknetics - Alpha 2000 Metal Detector with 8" Concentric Coil

On-screen menu displays target depth and target-ID by category. 3-Tone audio ID system. Notch feature allows exclusion of undesired categories. Numerical depth indicator. Volume Discrimination and Sensitivity are all adjustable. Easy to use - just turn on and go with preset ground balance. 8" Waterproof concentric coil. Battery life indicator. Battery lasts anywhere from 20-25 hours. 1/4" Headphone jack. Requires one 9V Alkaline battery (NOT included).