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GSD 26 Digital Black Box Network Sounder w/Spread Spectrum Sonar Technology
Garmin Pack Modules - even if they did not come as combos with built-in sonar - can add Garmin CHIRP sonar, Garmin CHIRP DownVü and CHIRP SideVü scanning sonar, with the clearest scanning sonar images on the water. They made the sonar modules incredibly easy to install, easy to understand and seriously easy to use. That�s the power of simple.