The Eagle 7 Splitshot from Lowrance comes packaged with Inland Lake Charts, providing detailed coverage on over 17,000 US Lakes. Packaged with a Splitshot transducer, this unit provides exceptional underwater views. Detailed Lake mapping for the US in included and provides coverage for over 17,000 Lakes, however if you are wanting or needing more coverage, the Eagle series is also compatible with C-Map Discover or Navionics Plus charts via the single SD Card slot. Please note, Lowrance Eagle series are NOT compatible with CMAP Reveal charts or Navionics Platinum Plus charts. Enhancing your underwater views with the included Splitshot transducer,The Eagle 7 shows detailed images of whats below your boat. Wide Angle, High CHIRP with FishReveal enhances the view of whats below, making targeting and distinguishing fish a simplified task. See Down Imaging in near photo like detail with Downscan imaging. You can even chart the uncharted with Genesis Live Real Time mapping. Allowing every end user the ability to create custom mapping with ft. contour maps of your local lakes or uncharted waters, you can create your own detailed mapping and save them by inserting a blank SD card into your Eagle display. Simplified Setup and Installation - Built into every Eagle unit is the Autotuning feature - spend less time setting up and get out on the water quicker. With Autotuning your Eagle unit provides the optimal settings from the start and with a new connector system, the improved twist-locking connector ensures a simple and reliable installation every time!