The Cobra MR F45 is a full function DSC-capable VHF radio. The selectable 1 or 25 Watt output is perfect for short or long-range communication. This unit has features usually reserved for more costly VHF radio units including Dual Watch, Dot Matrix Display Area, an adjustable backlight, and function keys on the mic. Cobra strongly recommends that you obtain and connect a GPS device to your CobraMarine VHF radio. By having a GPS connected, your position will be continuously indicated on the LCD and, most importantly, it will be included automatically in any DSC distress message you may need to send. That will take the “search” out of “search and rescue.” Cobra provides the GPS interface cable standard. In the Box MR F45 Marine VHF Radio Noise Canceling Microphone with Control Bracket Mount Kit GPS Interface Cable Instruction Manual