The Garmin GCV 10 black box sonar adds both SideVü and DownVü with CHIRP scanning sonar technologies to your compatible Garmin ECHOMAP or GPSMAP series combo. CHIRP technology sweeps through a range of frequencies to give you an ultra-clear sonar picture of objects, structure and fish that pass below (DownVü) and to the sides (SideVü) 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.