Cobra Electronics MR F55-D Class-D Fixed Mount VHF Radiobr Dual output power for short and long communication br Allows operation on any of the three 3 different channel maps established for these areas br Instant access to national all hazards and weather information 24 hours a day br When connected to a Cobra or most other GPS receivers you can send your position to other boats in an emergency or exchange position information with other boats or stations br Monitors two 2 channels at once - Channel 16 and one 1 user selected channel