chartplotter GPSMAP 3210, and gps antenna. power/NMEA cable included. The cable that i procured for the GPS antenna appears to be not the correct item for this unit, or possibly i'm just not hooking it up right. You will need to have knowledge on how to wire it. and you may need to buy the correct cable, the one that has the optional resistor to reduce the baud rate.......... $150 OBO