Champion Sports MP12W 1000 Yard MegaphoneOne of the most powerful megaphones around, the Champion Sports 12 Watt Megaphone comes with a handheld microphone for convenient one or two person operation. Able to be heard up to 1000 yards away, this megaphone also has a built in siren when you really need to get their attention. The adjustable volume control allows you to adapt to different crowds and distances, while the convenient wrist strap makes it easy to hold and transport this megaphone.