Single Frequency Mode
This allows you to select one frequency to better match your target:
Lower frequencies (e.g., 5 kHz) generally improve detection of larger, higher-conductive targets such as large silver coins.
Higher frequencies (e.g., 20 kHz) generally improve detection of smaller, lower-conductive targets such as hammered silver coins and gold nuggets.
Real advantage: You can tune the detector to your main target type.