49iQue ® M3 Operating InstructionsAPPENDIX > PRODUCT INFORMATIONLearning About GPS and WAASFor more information about GPS and WAAS, visit our Web site at http://www.garmin.com/aboutGPS.Caring for the iQue M3The iQue M3 case is constructed of high quality materials and does not require user maintenance except cleaning.Clean the outer casing (except for the screen) using a cloth dampened with a mild detergent solution. Wipe the casing dry. Avoidchemical cleaners and solvents that may damage plastic components.Clean the screen with a soft, clean, lint-free cloth. If necessary, you may use water, isopropyl alcohol, or eyeglass cleaner. Apply theliquid to the cloth and then gently wipe the screen.Storing the iQue M3Do not store the iQue M3 where prolonged exposure to temperature extremes may occur (such as in the trunk of a car), aspermanent damage may result. The unit retains user information, such as waypoints and routes, in memory without external power.As a precaution, back up important user data by recording it manually or by downloading it to a PC (transferring it to MapSource).