Heil Sound PR37, Dynamic Grand Diaphragm Microphone, Handheld format, Directional characteristics: Super cardioid, Frequency range: 40 - 18,000 Hz, Nominal impedance: 370 ohms, Sensitivity: -48.9 DB @ 1 kHz, Max. sound pressure level: 140 dB, Rear noise rejection: 40dB @ 180 °, Includes SM-5 microphone clamp, synthetic leather case and windscreen