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 distortion<=1%)
7. 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
