The AT Gold metal detector from Garrett Electronics is a new breed of deep-seeking, all terrain gold detector. The 18kHz frequency is great for small nuggets, coins and rings. This is a prospecting machine, but also a great all around detector. It's only weak spot is saltwater.
The AT Gold has some advanced ground balance options, including both manual and automatic ground balance plus an exclusive ground balance "Window" feature to help maximize the detector’s performance in highly mineralized conditions, where gold is most often found. The AT Gold is an all terrain detector and can be used underwater to a maximum depth of 10 feet (3 meters), perfect for searching freshwater lakes and streams.
The higher frequency is optimized for gold, and the true all-metal mode gives the best depth and sensitivity for prospecting, as well as continuous audio feedback for help detecting those tiny changes in signal associated with smaller, deep targets. The AT Gold also includes two discriminination modes for coin and relic hunting, as well as pinpoint mode.
Check out the display below to get a feel for just how much feedback the AT Gold provides: