X-balanced speaker unit enhances bass and delivers distortion-free audio at all volumes Press the ULT button to boost your bass, delivering deeper and more powerful sound for a richer audio experience 360° Party Sound delivers powerful audio throughout the room The 10-band equalizer lets you customize your sound and adjust frequencies Handle and wheels let you roll the speaker around Dynamic party lighting syncs with the music Two mic/guitar inputs, echo, and voice controls make it easy to sing and play along