Listen to music inside or outside your home without running speaker wires or power outlets! Grace's high-quality, weather-resistant speakers are perfect for wet or dry areas anywhere inside or outside your home. Powered by 900MHz 2-channel Phase Loop Lock circuitry they automatically lock in and keep the audio signal strong and clear within a range of up to 150 feet. The high powered wireless signal works through walls and other obstacles. The transmitter supports various audio inputs including RCA inputs for home theatre receivers, and headset connector for iPods, iPhone, TV's, MP3 players, and computers. Grace's wireless speaker system is a great solution for adding music inside and outside your home including: TV room for rear speakers, on the patio, near the pool, in your office, garage or garden. The speakers as well as the transmitter are dual powered. Both can play for hours of enjoyment on battery power or plug them into nearby AC power outlets. Enjoy your music without wires - with Grace.