Garmin GPSMAP 235 Sounder

Garmin GPSMAP 235 Sounder ... duplicate technology to enjoy your sport to its fullest. This unit features dual-frequency operation that provides a clear image in both deep and shallow water-1,200 feet in saltwater and freshwater-all from one transducer. Garmin's exclusive See-Thru® technology lets the GPSMAP 235 Sounder hear both weak and strong signals at the same time, giving it tremendous dynamic range. The result is a 4-level grayscale display that shows strong fish returns even when fish are inside structure and thermoclines. Over 25 square inches of active viewing area gives you sizable detail coverage. The backlit screen measures an impressive 7.25" diagonally, yet the unit itself is slim enough-a mere 2.57" deep-for discreet and easy bulkhead flush mounting. A variable zoom window allows you to view increased detail at the touch of a button.