Small power,high SPL
Built-in mp3 player and wireless microphone (optional), can play the content at any time you need
Design for remote speaking,warning,deterrent effect With function of waterproof,dustproof（IP45),drop resistance
Directional for good language intelligibility which can up to 85% while reach at1000 meters.
Apply for crowd evacuation,warning and dispersation, military exercise,prevention emergency evacuation, remote warning guidance, entrance control and illegal immigrant