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A battery-powered megaphone, the THUN-450, has its major components labelled.

6 Essential Battery-Powered Megaphone Tips To Make Sure Your Voice Is Heard

Whether you’re participating in a rally, coordinating an outdoor event, instructing students in an auditorium, or guiding players through drills on the practice field, megaphones and bullhorns are the best tools for getting your voice heard....

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