Electronics have played a major role in evolving the sport of ice fishing. Now it’s time for the sport to evolve the electronics, MarCums RT-9 is the result. Features full 3-D Navionics Mapping compatibility with access to the sensational Navionics+Community, internal power for handheld operation, the unit also runs Android apps, movies, and games. The modular concept allows users to build their own system, with 3 data ports the user can start with MarCums Ice Sonar, then add a second Ice sonar or Open Water Sonar later. Multi-dimensional selectable views include traditional flasher, vertical or chart. With multiple Sonar Modules user can view multiple holes on one display, operating and displaying independently the RT-9 can simulcast sonar from 2 locations.