Color: BlackMaterials: Aluminum AlloyPlay and plugMicrophone core type: electret condenser microphoneFrequency range: 50-16000HZHigh-quality sensitivity: -22dB+/-3dB (0dB=1Pa)Directivity: OmnidirectionalSignal-to-noise ratio: > 60DBSPLImpedance: less than 2.2K Ohm