346c DISonar OnlyThe 346c DI features a brilliant color 320V x 240H 3.5" display with LED backlight and Down Imaging Enhance and advanced DualBeam PLUS sonar with 4000 Watts PTP power output. The ability to turn 2D sonar off while in full screen DI view and get twice the number of DI pings.Advanced Sonar Features:Switchfire SonarSonar RecordingSplit Screen ZoomSplit Screen Bottom LockWide Narrow Cone Split ScreenInstant Image UpdateFreeze Frame with the ability to Mark Structure on SonarSelective Fish IDReal Time Sonar RTS WindowSonar Echo EnhancementTrueArch TechnologyUSER-FRIENDLY TECHNOLOGY3D Chart ViewLarge Digits ViewCustom View SelectionsCustom Digital Readout SelectionSelectable Display ColorsSelectable Background ColorsTemperature AlarmTriplogX-Press Menu SystemDisplay3.5" diagonal320V x 240H256 Color TFTSonarDown Imaging w/DualBeam PLUSw/SwitchFire200 kHz / 25 @ -10db455 kHz / 16 @ -10db455 kHz / 75 @ -10db800 kHz / 45 @ -10dbDepth: 250" (DI)/600"Power Output500W (RMS)4000W(Peak-to-Peak) Transducer Type NONEWaterproof Rating WaterproofWatts RMS - Max 500