Range of depth readout from 0.7 meters up to 100 metersDisplay bottom rock or grassRemovable floatDescription: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!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 : -20C to 70C (-4F to 158F)    Powered by : 4 x AAA batteries (NOT included)    Selectable between meter or feet readings    Can mount the sonar with the following methods        Fix it to the boat hull        Use a float on the cable to mount the sonar inside the water        Fix it on a pole and push it into the desirable position inside the water        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: 173gPackage Contents:1x Fish Finder    1x Round Sonar Sensor with 7.5m Cable    1x Bolt    1x Wing Nut    1x Neck Strap    1x User Manua