Garrett Ace 350 Metal Detector Ultimate Treasure Hunter Package W/Free Headphones & DVD Higher Frequency: offers improved ability to detect low- and midconductivity items (i.e. gold nuggets, jewelry, lead relics) Powerful new Double-D searchcoil: provides greater detection depth and performance in mineralized grounds and excellent scanning coverage. Enhanced Iron ResolutionTM: allows more control of iron discrimination levels; helps separate good targets from adjacent junk iron. Volume Control Headphones: included with purchase Electronic Pinpointing: to precisely locate target and speed recovery Accept/Reject Discrimination: to modify discrimination patterns - Five Search Modes: select pre-set discrimination pattern or create your own - Continuous Coin Depth Indicator: to determine target depth