indoor/outdoor wireless speaker

indoor/outdoor wireless speaker 1.RS40 wireless speaker set the transmitter,receiver,amplifier,and speaker as a whole. 2.Plug and play 3. Has the independent volume control ,and easy to operate. 4.It is applicated in the classroom of 50-80 persons , distance up to 100feet(max) can receive the signal. 5. Wireless install,just turn on the power. 6. Has the functions of audio output, input,high and low volume ,digital echo 7.A group of out-fitted wired microphones input. 8.Frenquency 40.66MHz,or 49.86Hz. Product appearance is novel, fashionable, lightweight, so that everyone in the wireless field solution in the past complicated wiring and location, you can freely adjust the sound in the playback position, whether you're indoors or outdoors,soenjoy your music anywhere, indoors or out—without running wires.