Featuresr wide and clear dot matrix lcd displayr depth readout ranges fom 201476ft and display bottom changing contourr high low sensitivity setting audible alarm of fish and water depthr 120m wireless operating ranger wireless sensor with 90 degree beam angler water temperature and battery indicatorr the battery of wireless sonar is replaceabler can be used as a depth sounderr 125khz sonar frequencyr adjustable sonar sensitivity settingr with simulation moder sensor automatica