For Marine Environment: The power cable is made of high-quality copper metal materials which are durable and suitable for rugged conditions.  Top-quality rubber and plastic materials are well-protected without clips, ties, or exposed wires.  you don’t have to worry about worrying about getting rust or damage during a long time of use. Easy Installation: Replace your old and defective power cable with this upgraded version, simply plug and play make this replacement power cable convenience to install, no complicated operations are required.  Compatible with Garmin echoMAP and Striker Series fishfinder.