1. Approximate impedance: 20ohm 2. Sensitivity: 108+-3db 3. Frequency range: 20Hz-20KHz 4. Microphone size: 6.0x2.7mm 5. Microphone sensitivity: -48+-3dB 6. Microphone impedance: 2.2Kohm 7. Directionality: omnidirectional 8. Cable length: about 2.2 meters 9. LED working voltage: DC 5V 10. Working current: about 100mA 11. Headphone jack: USB+3.5mm a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a