Signstek FF-011 Wireless Fish Finder FishFinder With Round Sonar Sensor White LED Backlight<br />http://www.amazon.com/gp/product/B00CK2KVWS?tag=sukses2015-20<br />Bottom contour and water temperature indicator Fish symbol and fish depth indicator <br />User selectable depth range and zoom onoff User selectable feet for meter reading <br />Depth reading from 20 to 100ft in 110th precision <br />5-level sensitivity setting 125Khz sonar frequency <br />Battery in sonar can be replaced Audible fish and depth alarm 399ft
