Been buying lowrance since the "green box", not anymore! I purchased 2 elite 5 chirp sonars 15 months ago. mounted 1 at the wheel and the other stayed on the shelf. Sonar #1 crapped out, mounted elite #2 plugged in power and unit comes on, only way to turn off is to unplug. Lowrance says tough sh-t. Looking at reviews I see Lowrance has flooded the market [rebates] with substandard product. JMHO