This product is designed for the fishing-lover.The unit can be used in the river,the lake, or the sea. It can help you find out the fish and the depth of the water.Especially,It gives you pleasure in fishing.

Specification
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 
9) Removable float     
10) Battery strength indicator   
11) Levels sensitivity setting   
12) Clear fish icon, fish alarm   
13) User selectable meter or feet readings  
14) Water Temperature Indicator   
15) Able to shoot through boat hull and clear ice 
16) Waterproof design: Level-4 (spray-water-proof) 
17) Bottom contour: Show true changing of water bottom contour     
18) Memory: Built in memory stores sonar setting when the unit is turned off     
19) Operational Temperature: -4F to 158F(-20C-70C)