Be heard up to a mile away with this super-powerful, professional megaphone. Amplify your voice cord-free and with clarity with this lightweight device. This megaphone also includes a siren sound and handheld microphone. Pyle-Pro PMP50 Professional Piezo Dynamic Megaphone The PMP50 includes a detachable microphone and features an ergonomic handle and lightweight chassis. The Pyle-Pro [Description & reviews]