Professional acoustic performance on the move! This wireless PA system's sturdy and compact cabinet is equipped with wheels and retractable handle in a light-weight ABS design and will give you years of enjoyment. Built with a frequency range of 10 DB equaling 50 HZ - 20 HZ, measuring 21-3/4 x 14-1/2 x 14 inches and weighing 35 pounds. Includes a 2 channel UHF wireless microphone system; a media player with stereo Bluetooth, USB port and complete mixer with echo, talk-over, EQ functions and much more. The system is equipped with one 10 inch woofer and a 1.35 inch voice coil titanium driver and high capacity 12 V 7.5 AH battery. Up to 5 hours of playback at maximal volume.