COBRA MRF57B Marine Radio, 2-Way Submersible Long Range Fixed Mount Class-D DSC with NOAA Weather Alerts, 1 or 25 Watt Selectable Output VHF Radio, Illuminated Display, Includes USA/Canada Rewind-Say-Again  Replay the last 20 seconds of a missed VHF call that is automatically recorded with a digital voice recorder so you never have to miss valuable information SHORT OR LONG RANGE - Clearly communicate with 1 or 25 Watt output options so that you're never alone on the water with PA capabilities you can connect to an external speaker to amplify your announcements 10 NOAA WEATHER CHANNELS - Be the first to know of incoming hazards or changing weather with instant access to NOAA weather channels 24 hours a day and audible tone/visual alarm if threatening weather is nearby. WATERPROOF STANDARD JIS8 - Submersible up to 5ft/1.5m for 30 minutes. Don't be fooled by competitor's "marine" products that aren't approved for the water. Nothing comes close to a Cobra! EASY AS THE TOUCH OF A BUTTON - Class D DSC (Digital Selective Calling) sends distress signal at touch of a button. Quickly and easily signal for help and share your location with other boats or stations.