Audionic DJ 850 Trolley Speaker is a powerful portable speaker designed for parties, events, announcements, karaoke, and outdoor entertainment. Featuring dual 12-inch subwoofers, dual 3-inch tweeters, 120W output power, Bluetooth, USB/TF/SD card support, built-in FM radio, AUX input, wireless HD mic, remote control, LED display, RGB lights, echo, repeat, reverb, and mic port, the Audionic DJ 850 Speaker delivers loud, clear, and event-ready sound with 5400mAh battery support.