Mairdi USB-QD Cable Active Noise Cacelation for Headsets

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 one
level 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 is
off when microphone is working.
- Working Status Indicator: The blue light is always on when
it 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