This amazing product is especially designed for amateur and professional fishermen alike, to find out the location of fish and depth of water. The unit can be used in ocean, river or lake and is fantastic for detecting schools of fish in any particular area. Using amazing and innovative technology, this portable fish finder is the ideal tool to bring the fish to you! 1. Detect and display grass, short & tall weeds, sand, and rocks on seabed 2. Get the approximate location of fish and the depth of water 3. Round transducer sensor with 7.5 m cable, 45-degree beam angle 4. With fish depth scale and audible fish alarm 5. User selectable meter or feet readings 6. Range of depth readout from 0.7 meters up to 100 meters 7. Display bottom rock or grass 8. Removable float