Garmin GPSMAP series represents the pinnacle of marine GPS technology developed by Garmin. Garmin has recently revamped their entire GPSMAP line, building a new series of high-tech fishfinders virtually from the ground up. Far more than your grandpa's basic fish finder, Garmin GPSMAP fishfinders are fully-featured GPS navigators that will help you conquer the seas with precise chart plotting and total system integration so you can have your sonar, weather, and radar all in one device. These Garmin fish finders feature full color screens with satellite-enhanced worldwide basemaps and access to the Garmin Marine Network. Each Garmin GPSMAP chart plotter also includes Garmin's G Motion technology, which features high refresh rates for a constantly updating HUD, even when weather conditions prevent visibility. XM satellite radio and weather systems also function with these Garmin marine GPS devices, and the addition of a BlueChart g2 Vision SD card opens up 3D perspective maps and high-res satellite images to your Garmin GPS MAP. Ranging from the compact lake-based fish finding of the GPSMAP 431 to the radar-ready of the GPSMAP 720, there's a GPSMAP fishfinder that can make you king or queen of the high seas. To bring the full power of Garmin satellites to bear on your little square of ocean, simply turn on your Garmin GPSMAP series marine GPS.