Humminbird 407980-1 1158c Combo Fishfinder and GPS (Discontinued by Manufacturer) 1000 Watt, 83/200KHz Dual Beam Fishfinder and 455KHz; Standard Sonar Coverage:20 & 60 at 10db 10.4-Inch color LCD with 600V x 800H pixel resolution Advanced Fishing System network capabilities Requires external GPS input Includes transom mount transducers Ultra-bright 10.4 " color 600V x 800H display, 4:3 aspect ratio 50 channel external GPS and dual SD card slot for loading LakeMaster or Navionics charts DualBeam PLUS w/SwitchFire, 8000 Watts PtP, 83/200 kHz, 1500 ft depth capability Networkable with Humminbird Fishing Systems