Feature:Quick OverviewThis 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 seabed2. Get the approximate location of fish and the depth of water3. Round transducer sensor with 7.5 m cable, 45-degree beam angle4. With fish depth scale and audible fish alarm5. User selectable meter or feet readings6. Range of depth readout from 0.7 meters up to 100 meters7. Display bottom rock or grass8. Removable floatSpecification:Display : TN/ANTI-UV LCD with LED back-lightingDepth range :0.7m to 100m (2ft to 328ft)Sensor Beam Angle :45 degreesOperating temperature : -20 C to 70 C (-4 F to 158 F)Powered by : 4 x AAA batteries  (NOT included)Selectable between meter or feet readingsCan mount the sonar with the following methodsA. Fix it to the boat hullB. Use a float on the cable to mount the sonar inside the waterC. Fix it on a pole and push it into the desirable position inside the waterD. Cut a hole on the ice surface and place the sonar under the waterDisplay the nature or circumstance of bottom of Sea (i.e. grass, rock and sand)Dimension: 120*65*30mmNet weight: 173gPackage weight: 633gPackage size: 260*175*65mm  Package Included:1 * Fish Finder1 * Round Sonar Sensor with 7.5m Cable1 * Bolt1 * Wing Nut1 * Neck Strap1 * bag for fish finder1 * User Manual