This is the 2nd level Premium Radio cassette plus optional Honda equalizer for all 1986-1989 Honda's. Item has been tested and works great. The Tune buttons up and down need to be pressed harder then normal but still work. Its also period correct for all 1986-1989 Acura Integras. Will plug and play with most all Hondas from 1980-1995.  All knobs switches and controls are fully functional besides what has been mentioned. Even the bottom row of the EQ buttons light up ! Cassette was not tested so we do not know if that works or not.