Two main characteristics: handset volume control, mute function (pressing a mute button, the other side can not hear your voice and your colleagues) Mechanical self-locking click on the mute switch is in the press to resume the call, no need to hold it down; Touch is a mute switch to hold it so inconvenient, not the liberation of his hands, the industry commonly known as false muted. Mute is a mechanical self-locking switch, the market some products are touch mute switch.
Headset Key Features: 1. Acoustic shock protection circuit 2. Flexible goose neck mic boom 3. Adjustable headband 4. Direct with USB plug 5. Replaceable soft foam or soft leatherette ear pad optional 6. Speaker Diameter: ?28mm 7. Impedance 150ohm 8. Frequency Response 300-4K Hz 9. Distortion: Less than 1% 10. Sensitivity: 115dB ± 3dB/mwat1KHz 11. Omni directional microphone 12. Frequency response: 100-3000Hz 13. Impedance: 22000 ohm 14. Sensitivity:-36dB ± 2dB 15. SNR: ? 49dB 16. Distortion: Less than 1% 17. Total cord length max 3M 18. Net weight: 32g
. USB headset for call center telephone KQ600USB picture: