Tracking of weather is easier than ever with the WM-4 Receiver for Simrad, Lowrance, and B&G multifunction displays. The WM-4 provides live, up-to-date weather information and forecasting to give you peace of mind,no matter when or how you are using your boat. The weather information is obtained from the weather industry's leading experts and is delivered via a digital receiver through SiriusXM's Marine Weather services. Receive high-quality and comprehensive weather information and forecasting that you can overlay directly onto your raster and vector charts. The WM-4 brings you premium weather content, such as current weather reports, NOWRad nationwide high-resolution weather radar imagery, and high-resolution Sea Surface Temperature images that can help fishermen locate fishing hot spots. Hardware and the SiriusXM weather service subscription are sold separately. The WM-4 Receiver also provides access to over 150* channels of SiriusXM satellite radio service which can be added at a discounted rate to the Marine subscription.