Using 2.4GHz digital technology vs the weaker old technology analog 900Hz technology. The 2.4Ghz has longer range, less noise and interference. Our Weatherproof designed wireless rock speakers send quality sound up to 300 feet range unobstructed (may vary depending on the environment) through walls floors or ceilings. Use batteries or included AC adapter to power the wireless rock speaker.Easy to setup, just plug your music source (iPod, MP3 player, CD-Player) into the wireless transmitter (include RCA and stereo audio input cables). You can have your favorite music playing in 2 minutes. Also includes wireless remote control to control the volume.