Garrett ACE 400i Metal DetectorGarrett ACE 400i Metal Detector with Volume control Garrett ClearSound Easy Stow headphones, ACE control box cover, 8.5" x 11" coil cover.The king of ACEs, the ACE 400i includes advanced features like Iron Audio, Digital Target ID, and Frequency Adjust to help you dig more treasure and less trash.Garrett ACE 400i Metal Detector key features:New Iron Audio: allows user to hear discriminated iron targets and to alter the mid-tone signal range.New Digital Target ID: 0 to 99 scale offers target informationNew higher frequency (10 kHz) provides better sensitivity on low and medium-conductivity targets (i.e. gold, lead)New Adjustable Frequency to help eliminate interferenceNew Camlocks for better stem stabilityNew! Includes Pulse-Width Modulation audio: sharper, more responsive audio8.5" x 11" (22 x 28cm) PROformance™ submersible DD searchcoil offers excellent coverage, depthEnhanced Iron Resolution: 3x the iron resolution of an ACE 250, to help separate good targets from adjacent junk iron IncludesElectronic Pinpointing: precisely locates targets and speeds recoveryNotch Discrimination: Modify discrimination patterns based on what you are seeking.Five Search Modes (plus Pinpoint)Eight (8) Sensitivity/Depth adjustmentsCoin Depth Indicator determines target depthIncludes revised Target ID legend and Mode/Discrimination patterns to better suit the search needs of international users.