The Eagle Fishmark Series of Fishfinders offer Great Value at Great Prices!  Packed with features, the Eagle Fishmark exposes fish targets hidden in surface clutter, weed beds, thermoclines, and other types of underwater cover.  These models display fish targets at higher boat speeds and displays real-time sonar returns and relative strength of each target.  With it's Advanced Signal Processing, your Fishmark fish finders automatically adjusts your settings for the best sonar picture to separate fish from nearby structure and the water's bottom.