Audio-Technica Condenser Microphone (BP892CLM3) The Audio-Technica BP892CLM3 MicroSet Subminiature Headset Microphone (Black) features a lightweight, super low-profile ear-loop that may be flexed to conform to all sizes. Its omnidirectional capsule is highly sensitive and minimizes off-axis noise while enhancing detail. High sound pressure handling makes it an ideal choice for singers, actors, presenters, etc. BP892 Subminiature Omnidirectional Condenser Headworn Microphone, less power module. 1.4 m (55") permanently attached miniature cable terminated for Sennheiser wireless systems using locking 3.5 mm connector. Includes AT8440 cable clip, AT8464 dual-ear microphone mount, two AT8157 windscreens, two AT8156 element covers, a moisture guard, and a carrying case. Features: Handles high sound pressure levels with ease Extremely intelligible natural audio Inconspicuous, lightweight headset with capsule diameter of just 2.6 mm is ideal for applications requiring minimum visibility Ergonomic under-ear design-flexible, lightweight contoured loop hooks behind the ear for an ultra-secure, comfortable fit with or without glasses High-pass filter on power module provides a steep low-frequency attenuation to improve sound pickup without affecting voice quality RoHS compliant-free from all substances specified in the EU directive on hazardous substances Specifications: Transducer: Fixed-charge back plate, permanently polarized condenser Polar Pattern: Omnidirectional Open Circuit Sensitivity: -49 dB (3.5 mV) re 1V at 1 Pa Frequency Response: 20Hz - 20kHz Dynamic Range (Typical): 104dB, 1kHz at Max SPL (wired only) Signal-to-Noise Ratio: 63dB, 1kHz at 1Pa Maximum Input Sound Level: 135dB SPL, 1kHz at 3% T.H.D. Power Requirements: 11-52VDC, 2mA typical (wired only) Output Impedance: 250 ohms (wired only) Output Connectors: Locking 1/8" (3.5mm) Connection Voltage Range: 2.5-11V (wireless only) Cable: 1.4m / 55", unterminated Dimensions: Microphone (LxDiameter): 0.32x0.10" / 8.10x2.60mm, Boom (LxDiameter): 3.87x0.04" / 98.40x1.07mm Weight: Microphone, Boom & Earpiece: 2.60g / 0.09oz