Police Megaphone 1.Function:amplifier, whistle 2.Lightweight: reinforce ABS,440G 3.Certificate: CE,FCC 4.Patented Product Police Megaphone M-1LAUsages:Elegant design, Impact-Resistant, Lightweight, Durable Construction! Ideal use in police, the troops, patrol duty, rescue, event control, public security,travel, sport, party, campint, etc. As well as the urgent situabtion, earthquake, flood. ...