The AU Gold Finder features three distinct search modes for a better gold hunting experience. The ALL METAL Mode penetrates the farthest into the ground and is great for finding just about anything. The DISC.1 FAST Mode was programmed for gold hunting in fields with high mineralization or significant quantities of conductive rocks. This mode improves target detection and recovery speeds in areas where there is a lot of trash. The DISC.2 DEEP Mode gives the user a two tone discrimination setting designed for gold fields with less mineralization or hot rocks. It provides an increase in depth performance while still being able to pinpoint large and small gold nuggets.