You know they can >hear you with the Califone PA25R Megaphone. 25 Watt megaphone features a detachable mic for your comfort, and it can record up to a 10 second message for playback at the push of a button. Effective range of up to 1,250 feet.
The durable ABS construction is suitable for all weather use. Volume control for both voice and emergency alert. Also includes choice of voice or siren operation.
Powered by 6 C cell batteries (not included). Includes convenient carry strap.