This 2-pack of PVi 100 Dynamic Cardioid Microphones from Peavey is intended to provide durable microphones for vocal applications in live sound, parties, and special events. It includes two PVi 100 dynamic microphones, which do not require batteries or phantom power. Each mic features a cardioid polar pattern to minimize sound-pickup from behind the microphone. They have Neodymium magnets and zinc die-cast bodies for durability as well as on/off switches for performer control.