Garmin Gcv 10 Black Box Sonar

The GCV 10 black box sonar adds both SideVu and DownVu with CHIRP scanning sonar technologies to your compatible Garmin echo MAP or GPSMAP series combo (see compatible devices). CHIRP technology sweeps through a range of frequencies to give you an ultra-clear sonar picture of objects, structure and fish that pass below (DownVu) and to the sides (SideVu) of the boat. Together with your combo"s HD-ID sonar, you get an excellent search and confirmation tool for advanced fish finding in both fresh and saltwater.