Garmin GPSMAP1242XSV 12in Comb No transducer US and Canada GN+The Garmin GPSMAP1242XSV is a 12 inch chartplotter sonar combo designed for serious boaters navigating U. S. and Canadian waters. With a no transducer configuration, you can tailor sonar performance by choosing and pairing your preferred transducers later, while enjoying Garmins planning, mapping, and live sonar tools. No transducer included: Transducer configuration: No transducer included; pair your preferred transducers (sold separately) to tailor