Portable Rolling Wheels and Trolley Speaker: This portable music box features flexible rolling wheels and a trolley handle, making it easy to take outdoors. The 8800mAh rechargeable battery offers hours of non-stop enjoyment. Powerful Sound Quality: Equipped with a 20W PA system, advanced audio driver, and digital signal processor, this karaoke machine delivers clear and balanced sound. The vocal removal feature is perfect for karaoke sessions. Dazzling Disco Lights: The speaker s lights sync with the beat of the music, and you can adjust the light modes to match your mood. It creates a vibrant atmosphere, making it the perfect party companion.