RCA & 3.5MM AUDIO INPUT JACKS ON TRANSMITTER; AUTO-TUNE STEREO SPEAKERS; AUTOMATIC LEVEL CONTROL; SINGLE COLOR BLUE MOOD LIGHT; 900 MHZ ANALOG ; UP TO 150-FT OUTSIDE RANGE ; UP TO 7 HOURS BATTERY LIFE DEPENDING ON VOLUME ; VOLUME, DOUBLE BASS-BOOST, TUNE & POWER CONTROLS ON EACH SPEAKER; SPEAKERS COMPLY TO INTERNATIONAL WEATHER PROOFING STANDARDS ; EACH SPEAKER REQUIRES 8 X AA BATTERIES OR INCLUDED UL AC WALL PLUG; INCLUDES 2 WEATHERPROOF WIRELESS STEREO SPEAKERS, 1 WIRELESS TRANSMITTER & 1 WIRELESS REMOTE