The powerful, simple to use echo 151 delivers the technology you need to catch more fish. The built in Garmin advanced HD ID dual beam sonar with a 77/200 kHz transducer (supports a 50/200 kHz transducer, sold separately) gives you excellent target separation and bottom tracking on the crisp 4

The powerful, simple to use echo 151 delivers the technology you need to catch more fish. The built in Garmin advanced HD ID dual beam sonar with a 77/200 kHz transducer (supports a 50/200 kHz transducer, sold separately) gives you excellent target separation and bottom tracking on the crisp 4 inch, 256x160 pixel gray scale display. Its 1,600 W peak to peak power reaches down to 1,600 feet maximum, and the wide viewing cone angles (60/120 degrees) give you a big picture well beyond the sides of your boat even in shallow water