Need a Portable Megaphone?
Amazon has the Portable Megaphone Speaker Siren Bullhorn marked down from $29.99 to $13.04 and it ships for free with your Prime Membership or any $25 purchase.
The megaphone speaker has 2 audio modes. The first one is voice mode wherein the bullhorn amplifies a voice or sound spoken into the microphone. This mode is most commonly used in cheerleading and other school activities.