1. Rate:30-18000Hz; 2. Senstivity: -40dB(0 dB=1V/Pa at 1KHz) 3. Directional property: single directional x 2 4. Output Impedance: 200Ohm 5. Noise-signal Ratio 76dB(1 KHz at 1Pa) 6. The max sound pressure level: 120dB(at 1KHz, harmonic distortion7. Power Input:DC 3V 8. Cable length: 28cm 9. Battery type: 3V CR2 battery(included), non-rechargeable 3V CR2 battery 10. Battery life: 800H 11. Size: 25 x 130 x 60mm 12. Weight: 45g

http://olla.gr/mic-02-30-18000hz-rate-sound-clear-stereo-microphone-for-smartphone-cable-length-28cm/