"ALUMINUM,BLACK NON-GLARE FINISH,6.750 IN. DEEP,5.750 IN. W,2.250 IN. H,PITCH COMMAND CONTROL,MODE SELECTOR CONTROL MARKED SC,HDG,VOR/LOC,GS AUTO,GS MAN,ALTITUDE CONTROL SWITCH WITH OFF AND ON POSITIONS,OPER POWER REQUIREMENTS 5.0 VOLTS AC/DC AT 600 MA AND 28.0 VOLTS DC AT 1.4 AMPS,FOUR TWIST LOCK FASTENERS FOR MTG,TWO 31 PIN ELECTRICAL CONNECTORS ON BACK"