Directivity: Cardioid (uni-directional). Frequency response: 80-12,000 Hz. Output impedance: Low (320 ohms), unbalanced. Effective output level: -57.9 dBm (0 dBm = 1mW/10 bar at 1000 Hz). Open circuit voltage: 78.0 dB (0 dB 1V/1 bar at 1000 Hz). Recommended load impedance is more than 3k ohms. Microphone cable 3.8mm diameter x 2.5m (with mini plug). Dimensions 47mm diameter x 179mm. Weight is Approx. 190g (with microphone cable).