STANDARD SIRIUS(TM) FEATURES; REPLAY; PRESET MEMORY; SONG SEEK; 6-LINE GRAPHIC DISPLAY; GAME ALERT, GAME ZONE; PARENTAL CONTROL & CHANNEL LOCKS; RCA STEREO&OPTICAL AUDIO OUTPUTS; RS232 PORT SUPPORTS EXTERNAL CONTROL SYSTEMS; 5-12V REMOTE TRIGGER POWER INPUT; ADD AN SC-H1 SIRIUSCONNECT(TM) HOME TUNER FOR DUAL-SOURCE CAPABILITY;