- 2–54 - AM ELECTRONIC TUNING RADIO WITH CLOCK OPT CONTROLS AND INSTRUMENTS 1 ON/OFF switch, volume control (push ON/VOL) 2 Display 3 Display button (DISP) 4 Speaker 5 Manual/Auto tuning button (TUNE) 6 Preset buttons 7 Preset button number indicator 8 Hour and minute set button (T.ADJ) 9 Reset button (RESET)