HERE WE HAVE OUR ECONOMY 4 SPEAKER UNIT. ITS DESIGNED MORE FOR THE CUSTOMER THAT IS LOOKING FOR A MORE BUDGET FRIENDLY SYSTEM WITHOUT SACRIFICING QUALITY SOUND! STILL USES OUR FAMOUS 100 PERCENT FIBERGLASS ENCLOSURE SO YOU KNOW IT WILL STAND THE RIGOURS OF OFF ROAD! SIMPLE TWO WIRE HOOK UP MAKES IT A PIECE OF CAKE TO INSTALL! THE ECONOMY VERSION COMES WITH FOR 6.5 POWERBASS MARINE SPEAKERS AM FM BLUETOOTH RADIO STANDARD DOME LIGHT AUX AND USB PORTS AND LED SPEAKERS ARE OPTIONAL.