Command the crowd instantly with the MP-66USB Portable Megaphone. Projecting your voice up to an incredible 1000 meters, this 50W (Max) megaphone is an absolute necessity for tour guides, sports coaches, and emergency responders. It goes beyond simple voice amplification by offering a built-in siren, a 120-second voice recorder for repeating messages, and USB/SD slots to play pre-recorded audio on loop.