M6 Class A AISFeatures: Compact AIS Class A transponder, easy to install and operate Fully compliant with IMO, IEC, and ITU international standards Color 4.3" high contrast display Waterproof to IPX6 and IP54 Detailed AIS target list and radar-like overview Multi GNSS system sources Integrated forward-facing Pilot Plug Automatic backlight dimmer Backlit keypad, intuitive use interface This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.