This advanced and affordable VHF handheld radio, is a greatway to make sure you get back toshore safely. Ideal as a backup radio,this guy can handle a 12 channel GPS, trackplotter, Great Circlenavigation and more. Plus it is fullywaterproof, submersible and floats! All International VHF voice andweather channels, plus Man Over Board functions, make this unit a necessary addition, to anyone&';s boat. Handheld Marine Radio Class D DSC Compliant Waterproof to JIS 7 standards Built-in GPS Receiver Unique New Trackplotter Screen Great Circle Waypoint Navigation Storage of Up To 500 Waypoints Man Over Board Functionality Track-Your-Buddy Feature Users Can Pinpoint and Display Exact Location of Other Vessels Using Position Polling Techniques Get-Buddy Feature Transmits Radio&';s Position Save a Buddy List Of up to 20 People Large 128 x 128 Pixels LCD NOAA WX 1050 HZ Tone Alert Selectable 5W/1W Transmit Power Latitude, Longitude and Time Display Distress Call Button with Hinged Door Program up To 3 Favorite Channels NMEA 0183 Output From Charger Base Power Saver Circuitry Automatically Switches to Battery Saver after 10 Second TX Laps