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The powerfully simple 4-inch gray scale echo™ 151dv includes both HD-ID™ and Garmin DownVü™ scanning sonar with all-in-one transducer for a nearly photographic sonar view under your boat.
The 4-inch, 8-level gray scale echo™ 151 combines powerfully simple operation with exclusive advanced HD-ID™ sonar, with and without a transducer.
The 4-inch gray scale echo™ 101 combines powerfully simple operation with exclusive advanced HD-ID™ sonar that includes a transducer.
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