PRODUCT SPECIFICATION:   
1) Display: TN/ANTI-UV LCD   
2) Display size: 40Wx39H   
3) Sensor Coverage: 90 degrees beam angle   
4) Back lighting: Green LED backlight   
5) Depth Range Max/Min: 131Feet(40meters)/2Feet(0.7meters)   
6) Wireless operational Range: 120Feets(35meters)   
7) Operational Temperature: -4F to 158F(-20C-70C)   
8) 4xAAA batteries, battery save mode, battery strength indicator   
9) High/Low sensitivity setting   
10) Fish depth scale, audible fish alarm   
11) User selectable meter / feet readings   
12) Sensor could shut down when it is out of the water   
13) W-sensor battery requirement:One replaceable CR-2032 lithium battery   
14) Bottom show:Show the bottom grass and rock  15) Waterproof design: level-4 (spray-water-proof)   
16) Can resist the interference from the grass when use in lake