The main difference with metal detectors by Garrett 150/250/350 and Teknetics Alpha 2000-availability of professional sound scheme of the detector. This device not only signals a “beep” as Asya, this appliance your buzz will show the depth and size of the target. Similar sound schemes are expensive devices Fisher F-75 and Teknetics T2. With this device, each target has its own character and in time you will know by the sound and the depth and the likely size of the goal.
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