Dot Matrix Portable Fish Finder

Quick Detail: Dot Matrix Portable Fish Finder - 1) Depth Range Max/Min: 240Feet(75meters)/2Feet(0.7meters) 2) Transducer: Small round transducer with 7.5m cable; 3) Display: Big Adjustable High-contrast Dot matrix FSTN LCD 128Vx64H; 4) Display size: 41Wx48H; 5) Back lighting: On/off White LED; 6) Sonar Coverage: 45-degree beam angle, 200KHz Sonar Frequency; 7) Temperature unit: Celsius/Fahrenheit; 8) Power Requirement: 4-AAA alkaline Batteries; Applications: Dot Matrix