With USB2.0 plug, plug and play, no software installation required Support Windows 98 and other new Windows editions With dual microphone active noise reduction technology to block out 99% of background noise High signal to noise ratio, low distortion, cystal clear sound With speaker volume controller and microphone mute function Microphone mute indicator (Red) and working indicator (Blue)

Merkkivalot ja painikkeet:
– Volume Down Button: Press 1x to decrease the volume by onelevel and long press to decrease.
– Microphone Mute Indicator: The red indicator lights up when the microphone is muted.
– Microphone Mute Button: Press 1x to activate microphone mute. The red indicator lights up when it is mute. Press again to de-activate microphone mute. The indicator light isoff when microphone is working.
– Working Status Indicator: The blue light is always on whenit is standby and the blue light flashes during talking time.
– Volume Up Button: Press 1x to increase the volume by one level and long press to increase.
– Background Sound Pickup Hole