●?? SUPERB SOUND QUALITY: Listen to clearer, more balanced sound with an 8” subwoofer and 1” tweeter for full-range surround stereo reproduction and impressive bass response. Theres also a bass controller to crank up the bass. ●?? KARAOKE FUN: Comes with 2 wireless microphones and an extra 1/4” microphone jack to support up to 4 people singing at the same time. The upgraded microphones will mute when the sound received is below 15dB while the volume also is adjusted separately. ●?? MULTIPLE CONNECTIVITY: This PA speaker features Bluetooth for wireless audio streaming and also supports USB input, AUX-in, and TF card slot for non-Bluetooth devices. It can also sync with your TV via Bluetooth/AUX Cable to share lyrics for karaoke! ●?? 6 RGB LIGHT MODES: Not only does this PA system deliver an excellent sound, it also lights up in a variety of color combinations. The light effects will change with the rhythm of the music ●?? RECHARGEABLE BATTERY: This rolling speaker has a built-in 3600mAh 7.4V rechargeable battery which makes it convenient and portable. Rechargeable with the included USB charging cable while being used.