“Ssst, Are you aware of that the bluetooth speaker is utilizing a radio frequency technology? You do? Properly, but Did you know that radio frequency is strictly controlled? Powered by a large 1000 watt amplifier, the Electro-Voice ZLX-12BT is able to delivering an impressive amount of power and audio https://www.bluetoothspeaker.top/hot-sale-hand-free-for-mobile-phone-bluetooth-speaker/