16 Channel GPS Receiver With the GPS Receiver you can access advanced trackplotter and navigation capabilities of your Fishing System.Key Features:Access advanced trackplotter and navigation capabilities of your Humminbird Fishing System! Use the NMEA output of your existing handheld GPS as an affordable solution of big screen easy to use trackplotting and fishfinding simultaneously. Or use the Humminbird WAAS/EGNOS GPS Receiver for permanent installation on your boat. Either way you'll enjoy the power of GPS to help you find those elusive fishing spots and guide you home!Purchase an AS GR16 FishingGPS Receiver to take advantage of the advanced GPS capability of all Fishing System Products. Connect this GPS Receiver to the Fishing System to see your position breadcrumb trail speed and other GPS features. Product : HUMMINBIRD AS GR16 GPS SENSOR Manufacturer : HUMMINBIRD PARTS Manufacturer Part No : 406340-1 UPC : 082324507311