Wireless Fish Finder with Sonar Sensor (2.8 Inch Display)

Main Function: Wireless Fish Finder & Sonar Sensor with Dot Matrix DisplayMenu Settings: Backlight, Sensitivity, Depth Range, Zoom, Fish Alarm, Fish Icon, Chart Speed, Depth Unit, Temperature UnitDisplay: High contrast adjustable Dot-Matrix FSTNLCD (128x64)Display Size: 2.8 Inch Anti-UV LCD, W:41xH:48 (mm)Measurement Units: Feet & MetersBacklight: White LEDSensor Beam Angle: 90 DegreesDepth range: 0.6m to 40m (2ft to 130ft)Built In Memory: Yes, Stores sonar settings when powered offOperating Temperature: -20 C to 70 C (-4 F to 158 F)Wireless Operational Range: 50 Meters (160 feet)Power Source: 4 x AAA batteries (not included)Wireless Sonar Power Supply: CR-2032 Button Battery X1 (Included)Dimensions: L:120 x W:70 x D:30 (mm)Manufacturers Ref: ZCD80KM5V42O