ONIKUMA X91 Over-ear Wired Earphone with Microphone(White)

1. Speaker Diameter: 50mm 2. Impedance: 20 ohms +/- 15% 3. Sensitivity: 113dB +/- 3dB 4. Frequency: 20Hz-20KHz 5. Microphone Size: 6x2.7mm 6. Microphone Sensitivity: -41dB +/- 1dB 7. Microphone Impedance: 2.2 kOhms 8. Directivity: Omnidirectional 9. LED Operating Voltage: DC 5V +/- 5% 10. Operating Current: 100mA 11. Headphone Interface: 3.5mm + USB jack 12. Cable Length: 2.2m