Stay weather aware, have an easier time targeting specific fish species and listen to news, a ballgame or your favorite tunes with the WM-4 Marine Satellite Weather Receiver. Get up-to-date, detailed weather forecasts, weather radar, lightning, storm warnings, sea surface temperature, insight on favorable areas for particular fish species and more, when you complete your boat’s system with the WM-4 Satellite Receiver and a SiriusXM ® Marine Satellite Weather subscription. Add audio to your Marine Weather or Fish Mapping subscription and get access to more than 140 SiriusXM ® radio channels at a discount.