The AQUAMAP 80xs keyed chartplotter/sonar combo has an 8” color SVGA display and comes preloaded with a worldwide basemap supporting BlueChart G2 and BlueChart G2 Vision to expand the chart for more information. High-sensitivity 10 Hz GPS/GLONASS provides position and heading updates 10 times per second (Garmin GA38 is included & required for GPS/Chart-plotter function). HD-ID, CHIRP and DownVü with CHIRP sonar technology are built-in allowing you the flexibility to choose from several optional transducers to get different sonar effects: including traditional sonar, HD-ID and CHIRP sonar. It can also be extended to connect the GCV^TM10 sonar module to achieve CHIRP level down-scan imaging and side-scan imaging functions, and experience detailed high-resolution underwater images to obtain real-time underwater landscape, structure, obstacles, and fish images. The AQUAMAP 80xs also supports the use of GMR^TM radar and external sonar series via network connection for easy function expansion and device update, plug and play, that is easy to install and can share data and information with other compatible devices connected to the network.