TOA ER3215S is a hand grip megaphone with siren, detachable hand held mic with volume control and on off switch. Pressing the siren button sounds a siren continuously in emergency conditions. They provide acoustic performance and enhanced audio quality with a wide frequency range. The Mouthpiece, microphone and handle are antibacterial treated, and are made from ABS or ASA high durability resin construction. As the original inventor in 1954, they are world renowned and their sound quality is still unsurpassed to this day. TOA offers an extensive range of portable power megaphones that provide optimal reinforcement for various applications in different environments. TOA ER3215S is ideal for schools, government organization facilities, factories, sporting associations among many others.