The PA15 Handheld Megaphone uses the latest communication technologies to ensure that educators and students can hear your critical important message loud and clear from up to 244 feet away. This megaphone is built with rugged durable ABS plastic to withstand any kind of weather and is dependable for drills and emergency response situations. It features a volume control for the emergency siren/alert operation a built-in electret microphone 15 watts RMS of power an accessible on/off switch and a strap on its handle.