Portable Fish Finder

Portable fish finder Specification: Depth readings from 2.0 to 240ft in 1/10th precision Small round transducer with 7m cable,45-degree beam angle 200KHz Sonar Frequency Removable float LED backlight with wide window display 4xAAA batteries Battery save mode Battery strength indicator Levels sensitivity setting High/Low sensitivity setting Clear fish icon Fish alarm Bottom contour User selectable meter or feet readings Water Temperature Indicator Water resistant design Able to shoot through boat hull and clear ice Can display different bottom (grass,sand,rock) in the sea Can resist the interference from the grass when use in lake