The Pyle PMP37LED is a lightweight and durable megaphone bullhorn. With each iteration of our flagship megaphones we ve improved the battery life power and ergonomics. This model features 30 watts of power so your voice will be heard from up to 800 yards away. Integrated LED flashlight mode is activated by the touch of a button and can shine some light if you want to project your message at night. And if you need to get everyone s attention simply switch to the siren mode to activate a loud powerful alarm sound. Works great for indoors or outdoors.