Plug 'n Go. Ready to Speak. Reach audiences up to 1,500 in rooms up to 15,000 sq. ft. Built-in 50W amplifier with built-in receiver and 2 Jensen design speakers angled to achieve 180 degree sound coverage. Includes lapel & headset mic with transmitter, sensitive flexible gooseneck mic. Storage space behind magnetic grille cover. Rugged hard shell polyethylene molded case. Easy to carry with built-in handles. Includes audio cables for laptop or projector. Powered by included internal rechargeable battery. Includes AC Adapter/recharger. 20"W x 17"D x 10"H overall.