The MPA-400 Wireless Megaphone PA system with Wireless Handheld Mic is an incredibly portable solution for getting heard in areas with high ambient noise levels. This modern take on a bullhorn let's the crowd see your expression while you're expressing them, and with much more clarity. It's ideal for many applications, including use in outdoor gatherings, classrooms, conference/meeting rooms, churches, health clubs and small auditoriums. The 40W MPA-400 is powerful, yet lightweight and easily portable with its attached shoulder strap. Helping get you get your point across is the WHT Handheld Microphone Trasnmitter, which features the Nady DM-10D unidirectional neodymium dynamic cartridge. This gives you true sound with little worry of feedback rejection or handling noise.