•【Lighting & Bluetooth 5.0】After successfully connecting via Bluetooth "K12", the sound of playing music may be too loud, you can adjust the volume through the "+" "-" of the stereo and microphone. "PS: If you still feel the volume is too loud, you can also adjust the volume of your mobile phone. Please do not put the microphone close to the speaker!Dazzling light effects along with the music, dance it up~!