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Marine GPS Navigation System, For Marine,forest, Screen Size: 2.5 inch
Marine GPS Receiver SA-320: High End GPS Receiver for Boat, Ship - Usable with Plotter, Radio, Fishfinder, etc over RS-232 Interface. Best Evermore Antenna aerial Receiver for precise Marine Navigation : Amazon.de:
Marine GPS Receiver Antenna with NMEA Input cable for Raymarine E80 Chartplotter | eBay