New lower price! Amazon is offering the Pyle-Pro PMP30 Professional Megaphone/Bullhorn with Siren for $10.75 + FSSS or free 2-day shipping with Prime.
There are any number of attention-getting applications for a powerful bullhorn, and this model from audio equipment maker Pyle offers 30 watts of power and an 800-yard range. This compact yet powerful portable megaphone with hand grip is commonly used by the U.S. Army, Navy, Air Force, and Marines due to its versatile size and weight, and it runs on four D-sized batteries. Additional features include a built-in siren, volume control, power on/off switch with LED indicator, siren and music control, and a convenient carry strap.
Runs on four D batteries (sold separately).
Measures 6.25 by 10 inches (W x D).
Weight: 1.15-pound without batteries