Marcum MX-7 GPS LCD SonarMarCum legendary real time sonar performance Navionics basemaps pre installed, with access to full Navionics mapping capabilities Fueled by the MarCum Brute 12V10AH Lithium LiFEPO4 battery Widest in class 20 degree cone angle sonar sees fish further to the sides, giving you an advantage for both finding AND catching Ultra narrow 8 degree Narrow Beam Transducer targets only the fish directly beneath you Industry leading . 5 inch target separation