Features: Lightweight condenser headset microphone with 3.5mm plug suitable for wireless bodypack . Highly sensitive high dynamic and wide frequency response. Head-mounted design gives you of movement and performance. With foam windscreen for effectively reducing environmental noise. Wide application can be used for speech teaching tour guide interpretation etc. Specifications: Type: Condenser Microphone Directivity: unidirectional Frequency : 50Hz-16KHz Sensitivity: -39dB +/-1dB(0dB=1V/Pa at 1KHz) Output Impedance: 680Ω±30%（at 1kHz） Plug: 3.5mm 2 types for option Cable Length: 100cm / 39.4in Item Weight: 24g / 0.8oz Package List: 1 * Microphone 1 * Windscreen