Garmin 400C Fish Finder with Dual Beam Transducer
...beam transducers makes this a good choice for both freshwater and saltwater fishing. In the offshore setup, you'll get a true A-scope display for instantaneous sonar data. When configured for inland use (dual beam), a round flasher viewing option is provided. The 400 watt RMS dual beam version offers a wide fish-finding cone and reaches...
