The Pyle PMP37LED is a lightweight and durable mini megaphone bullhorn designed for both indoor and outdoor use. With 30 watts of power, it delivers clear sound up to 800 yards. This model features an Led light mode, activated by a button, to help project your message at night, as well as a siren alarm mode for getting attention. It's powered by 4 x 'C' batteries (not included) and is built to withstand the demands of both personal and professional use.