The Bounty Hunter (R) Fast Tracker Metal Detector features 2 operating knobs that enable you to find valuables faster. This motion metal detector provides two modes: Motion all metal and Discrimination. The all-metal mode detects many types of metals such as iron and aluminum to gold and silver. The discrimination mode allows you to eliminate certain metals from detection. The Fast Tracker also provides automatic tuning and ground balancing. FEATURES: Bounty Hunter Fast Tracker Metal Detector Motion metal detector detects objects from movement Motion all-metal mode detects all metals from iron and aluminum to gold and silver Discrimination mode eliminates unwanted metals Automatic ground balancing to "see through" ground minerals Two-tone audio to identify valuables Model: FAST Bounty Hunter