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 boatâs 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.• Power Usage: 3 Watt• Dimension: 7 Inch Width X 1.7 Inch Depth X 3.1 Inch Height• Input Voltage: 10.8 To 31.2 Volt• Operating Temperature:-4 To 158 Degree Fahrenheit• Waterproof Rating: IPX 6/7 Rating• Includes: With WM-4 Sirius Satellite Weather Audio Cable/ WM-4 Sirius Satellite Weather Power Cable | WM-4 Marine Satellite Weather/Audio Receiver