858c HD ComboThe 858c HD Combo features a Vibrant color, wide-screen 480V x 800H 7" SUPER BRIGHT LED display with CCFL backlight, DualBeam PLUS sonar with 4000 Watts PTP power output, GPS Chartplotting with built-in ContourXD map, and advanced Fishing System capabilities. Includes unit cover. Maximize your angling experience with the Humminbird 858c HD Combo fishfinder GPS system.Features: Vibrant color 7" Super Bright LED High-Def display with 480V x 800H resolution Incredible sunlight viewability Video-out port on back of control head Ethernet port on back of control head for future expandability Navionics Platinum compatibility 480V x 800h Temp included GPS speed included DualBeam PLUS 200kHz/20°, 50kHz/74° 500W RMS 4000W PTP 3 "soft-key" preset buttons Dual SD card slot 50-channel external GPS LakeMaster & Navionics compatible Optional in-dash mountingAdvanced Sonar Features:Switchfire SonarScreen Snap Shot to Memory CardSonar RecordingSplit Screen ZoomSplit Screen Bottom LockWide Narrow Cone Split ScreenInstant Image UpdateFreeze Frame with the ability to Mark Structure on SonarSelective Fish ID+Real Time Sonar RTS WindowSonar Echo EnhancementTrueArch TechnologyUser-Friendly Technology3D Chart ViewLarge Digits ViewCustom View SelectionsCustom Digital Readout SelectionSelectable Display ColorsSelectable Background ColorsView Preset KeysTemperature GraphTemperature AlarmTriplogX-Press Menu System Specifications:Basemap: YesCard Format: SDCartography - Preloaded: NoCartography Brand: NavionicsCartography Type: Gold/HotmapsFrequency: 200/50Included Transducer: XNT-9-DB-74-TInternal/External Antenna: ExternalResolution (VxH): 480 x 800Screen Size: 7'Screen Type: ColorSpeed/Temp: BothTouchscreen: NoTransducer Type: Transom MountWaterproof Rating: WaterproofWatts RMS - Max: 500Waypoints/Routes: 2,750/45Weather Capable: Yes