Garmin's RapidReturn sonar sends multiple sonar signals through the water column simultaneously, which results in much more sonar information to quickly see on the multi-function display. This allows ...
28 , a high-powered sonar module engineered for serious sportfishing. Featuring Garmin RapidReturnTM sonar, the GSD 28 provides more sonar data on the multi-function display with up to 6 times the ...
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