The Samson R21 Dynamic Vocal/Presentation Microphone 3-Pack features three R21 mics, each with a tight cardioid pickup pattern for maximum gain before feedback, a dual stage windscreen, heavy gauge mesh and anti-dent ring for enhanced protection, as well as gold-plated XLR pins that ensure positive connectivity. Features: High output dynamic element Unidirectional cardioid polar pattern for maximum gain before feedback Withstands high SPLs Dual stage windscreen Excellent for live performance and recording Rugged road-proof design Gold-plated XLR connector Mic clip and carry case Included Specifications: Type: Dynamic Frequency Response: 80 Hz - 12 kHz Polar Pattern: Cardioid Output Impedance: Rated at 500 Sensitivity: -53 dBV/pa (1.8 mv/pa) Connector: 3-pin gold plated balanced XLR male