Keyed chartplotter/sonar combo with 8-inch color SVGA display Preloaded U.S. LakeVu HD and Blue Chart g2 coastal maps Built-in Garmin HD-ID and supports CHIRP and DownVu scanning sonar with CHIRP technology High-sensitivity internal 10 Hz GPS/GLONASS receiver Supports all Garmin marine radar The GPSMAP 840xs keyed chartplotter/sonar combo has a 8-inch color SVGA display and comes with preloaded U.S. LakeVu HD and Blue Chart g2 coastal maps. HD-ID 1 kW sonar, CHIRP and DownVu with […]