Garmin Fishfinder 140 with 4.7-Inch Display and Dual-Beam Transducer Full-Featured Sonar With 4.7-Inch, 128 X 240 B&W Fstn Display Ultrascroll High Rep Rate Sonar Dual Beam Transducer With Selectable Narrow (14 Ft) Or Wide (45 Ft) View For Maximum Freshwater Performance High-Dynamic Range, Analog Receiver Performs In Water As Little As 1 Ft Deep Autogain Technology For Visibility Of More Fish