Flexible and expandable for conference, medium theater and houses of worship applicationswms470 presenter set is a professional multichannel wireless microphone system. The enclosed ck99 l cardioid condenser lavalier microphone provides a cardioid polar pattern and a natural sound, with a slight rise above 10khz for added clarity. The package also includes a c555 condenser head-worn microphone featuring a cardioid polar pattern and high intelligibility, even at high ambient noise levels. Its moisture shield ensures a high degree of humidity protection for the microphone.