With this metal detector, you can search for coins, artifacts, jewelry, gold and silver anywhere When the detector emits different tones to different types of metals, and when the detector "rejects" certain metals, we call it the detector "identify" different types of metals Precise positioning is the process of finding the exact location of buried objects. The buried metal appears to the naked eye exactly the same as the surrounding soil, so it is difficult to separate it from the soil Ground balance is the ability of the detector to ignore or see through the minerals naturally present on the earth and only make a sound when a metal object is detected Different types of metals are classified on a scale of 0-100 from left to right along the arc at the top of the screen. A 2-digit digital readout is also provided in the middle of the display for more accurate target recognition during recognition