The 787c2i Combo NVB features a brilliant color, ultra-high resolution 640V x 480H 5 display, DualBeam PLUS sonar with 4000 Watts PTP power output, GPS Chartplotting and advanced Fishing System capabilities. www.humminbird.com/uploadedFiles/Humminbird/Leading_Innovation/Technologies/Cartography_-_GPS_-_Maps/NVB_Lake_List.pdf Includes Navionics Gold and HotMaps Premium Charts pre-loaded.