Powerful: Parrotias megaphone delivers 30 watts of power and is powerful enough to carry sound as far as 800 yards.
Portable: This bullhorn handheld is compact and portable with an exact dimension of 6.3'' x 10.0''cm. 
Durable and safe: ABS plastic, which is sturdy and noninflammable. 
Emergency speaker: Detachable handheld provides alarms and a piece of music.