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The speaker can start up as soon as possible. When you take out the microphone, the speaker can react at the same time, and EL strip will light up. Press Bluetooth button, then the kit will automatically connect to your electronics such as cell phones. The buttons on the speaker can control the volume of the whole sound level. Four volume sliders separately control total volume, echo, treble volume and bass volume. The microphone and the speaker can be charged through the interface.