Garmin GXM 51 Weather and Audio XM Satellite Receiver (requires subscription) Deliver U.S. graphical weather data directly to your compatible Garmin chartplotter Easy plug-and-play installation with NMEA 2000 network connectivity--powered by NMEA 2000 bus More than 20 types of weather info--NEXRAD, lightning, wave heights, water temps, wind data, and more Use the GXM 51 to enjoy over 170 channels of quality audio entertainment via XM Satellite Radio Includes necessary cables and mounts for most installations