The 898c SI Combo features a brilliant color, ultra-high resolution 480V x 800H 7 display with CCFL backlight, Side Imaging and DualBeam PLUS sonar with 8000 Watts PTP power output, GPS Chartplotting with built-in ContourXD mapping, and advanced Fishing System capabilities. In addition, it includes dual card slots for maps and saving waypoints, as well as 3 programmable preset buttons to save your favorite views. Maximize your angling experience with the Humminbird 898c SI Combo fishfinder GPS system.To obtain 8000 watts PTP requires the use of the optional 1kW (8000watt) transducer.