... .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 ... (L x W x H): 720x 480 x 230 mm Police Megaphone