Kissmart Portable Fish Finder Depth Sonar Sounder Alarm Transducer Fishfinder 328Feet (100m) Detect and display grass, short & tall weeds, sand, and rocks on seabed Get the approximate location of fish and the depth of water Round transducer sensor with 7.5 m cable, 45-degree beam angle Range of depth readout from 0.7 meters up to 100 meters. User selectable meter or feet readings With fish depth scale and audible fish alarm