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 Feature: 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 Specification: Display : TN/ANTI-UV LCD with LED back-lighting Depth range :0.7m to 100m (2ft to 328ft) Sensor Beam Angle :45 degrees Operating temperature : -20°C to 70°C (-4°F to 158°F) Powered by : 4 x AAA batteries (NOT included) Selectable between meter or feet readings Can mount the sonar with the following methods A. Fix it to the boat hull B. Use a float on the cable to mount the sonar inside the water C. Fix it on a pole and push it into the desirable position inside the water D. Cut a hole on the ice surface and place the sonar under the water Display the nature or circumstance of bottom of Sea (i.e. grass, rock and sand) Dimension: 120*65*30mm Net weight: 173g Package weight: 633g Package size: 260*175*65mm Package Included: 1 * Fish Finder 1 * Round Sonar Sensor with 7.5m Cable 1 * Bolt 1 * Wing Nut 1 * Neck Strap 1 * Non-woven bag for fish finder 1 * User Manual