LET YOUR VOICE BE HEARD: With a peak power of 15 watts, this portable megaphone can project your voice and sounds up to 600 feet away! Use 6 AA batteries (not included) to power up your megaphone and let your voice be heard! BUILT IN AUTOMATIC SIREN FUNCTION: Catch up your audience’s attention with the built in automatic siren function! Simply turn on the siren switch and have attention turned on to you while speaking! Trusted and used by U.S Armed forces ADJUSTABLE VOLUME CONTROL: Equipped with an adjustable volume control, bring this portable megaphone to your indoors and outdoors event without having to worry about its sound outcome! TALK FUNCTION: This portable megaphone with siren is extremely lightweight and comes with talk function. It comes with a dynamic built-in microphone and high quality speaker for portability; bring it to your next event ERGONOMIC GRIP & LIGHT-WEIGHT: With the ergonomic pistol grip and lightweight chassis, bring this compact, portable and durable megaphone with siren easily on your events and occasions!