The display must have high resolution (vertical pixels) and good contrast to be able to show all of detail crisply and clearly. This allows fish arches and fine detail to be shown.

Factors to consider when selecting a transducer:

When trying to determine which transducer is best for you, you’ll need to consider following variables: * What material transducer housing is made of, based on boat hull composition * How transducer should be mounted on boat: in hull, through hull, or on transom * What you want to see displayed: depth, speed, temperature, or a combination

Composition The first step is to determine what material transducer should be composed of.

Find moore info at:http://www.bystore.org/select_fish_finder.html