This Pyle Pro dynamic megaphone makes your voice sound huge! It"s got 40 watts of power, a 1000 yard range, and a built in siren. Grip the handle and speak, or detach the microphone to let your voice be heard. This megaphone even has a 10-second recording function, so you can easily play back a prerecorded message - get it right every time. Volume control allows you to adjust the sound to your liking. Use the included rechargeable batteries, or 6 x D batteries (not included).