1 x ER-604W Mega Talk
+ Compact shoulder-type megaphone
+ Incorporated with Whistle function, Mic-Located Volume Control and Press-to-Talk Switch
+ Auxillary input for external program source
+ Audible range up to 160m for both voice and whistle
+ Incorporated with anti-bacterial treatment
+ Can operate with either battery or AC power
Ideal for schools, government organization facilities, factories and many others.