Pro Grade XLR Lavalier Interview Set Omni-Directional Polar Pattern for Low Distortion, Wide Dynamic Range Cardioid Polar Pattern for Use in Noisy Environments; Limits Unwanted Background Noise Features a Standard 3-pin XLR Connector; Operates on +48V Phantom Powered (required) 1 Year Warranty with U.S.A.-Based Support Specifications - Capsule Size - 8.3mm Frequency Response - 35-18KHz +/-3dB Max SPL - 120 dB Sensitivity - -38dB +/-3dB / 0dB=1V/Pa, 1kHz Output Impedance - 2000 ohms Power Requirement - 48V Phantom Power Signal-to-Noise Ratio - 78 dB Connector - XLR Cord length - 6-foot