echo 200, echo 300c, echo 500c, and echo 550c Owner’s Manual 19AppendixSetting the Units of MeasureYou can set the units of measure the echo shows.1. From any page, select MENU > Setup > Units.2. Select an option:• Select Depth, and select Feet (ft), Meters (m), or Fathoms (fa).• Select Temperature, and select Fahrenheit (°F) or Celsius (°C).• Select Water Speed, and select Miles/Hour (mh),Kilometers/Hour (kh), or Knots (kt).• Select Distance, and select Statute (mi, ft), Metric (km, m),Nautical (nm, ft), or Nautical (nm, m).Viewing System InformationFrom any page, select MENU > Setup > System > SystemInformation.restoring the Original Factory SettingsNOTE: This procedure deletes all settings information you have entered.From any page, select MENU > Setup > System > System Information> Factory Settings > Yes.Software License agreementBY USING THE ECHO 200, THE ECHO 300C, THE ECHO 500C, OR ECHO550C, YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS OFTHE FOLLOWING SOFTWARE LICENSE AGREEMENT. PLEASE READ THISAGREEMENT CAREFULLY.Garmin Ltd. and its subsidiaries (“Garmin”) grant you a limited license to use thesoftware embedded in this device (the “Software”) in binary executable form in thenormal operation of the product. Title, ownership rights, and intellectual propertyrights in and to the Software remain in Garmin and/or its third-party providers.You acknowledge that the Software is the property of Garmin and/or its third-party providers and is protected under the United States of America copyright lawsand international copyright treaties. You further acknowledge that the structure,organization, and code of the Software, for which source code is not provided, arevaluable trade secrets of Garmin and/or its third-party providers and that the Softwarein source code form remains a valuable trade secret of Garmin and/or its third-partyproviders. You agree not to decompile, disassemble, modify, reverse assemble,reverse engineer, or reduce to human readable form the Software or any part thereofor create any derivative works based on the Software. You agree not to export orre-export the Software to any country in violation of the export control laws of theUnited States of America or the export control laws of any other applicable country.Hg - LAMPS INSIDE THE ECHO 500C AND THE ECHO 550CCONTAIN MERCURY AND MUST BE RECYCLED OR DISPOSEDOF ACCORDING TO LOCAL, STATE, OR FEDERAL LAWS.For more information go to:www.garmin.com/aboutGarmin/environment/disposal.jsp.