Cobra MR F77B GPS   Marine Radio, 2-Way Submersible Long Range Fixed Mount Class-D Dsc With Gps And Noaa Weather Alerts, Rewind Say-Again, 25 Watt Output Vhf Radio, Illuminated Display, International Coverage For Usa/Canada And Pa Compatible, 4, Black Built in GPS - simply connect the radio to power and in the event of an emergency, your exact position will be sent to the rescue authorities making navigation worry free. Ready out of the box to be a complete life saving solution 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. Jis8 waterproof standard - 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!