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Blackwire C610/C620 Product Information

The Blackwire 600 Series Family consists of 4 models

  • 81964-42 - C610 - Standard monaural USB headset
  • 81965-42 - C620 - Standard binaural USB headset
  • 81272-42 - C610-M - Monaural headset optimized for Microsoft Office Communicator 2007
  • 79930-42 - C620-M - Binaural headset optimized for Microsoft Office Communicator 2007


  • Wideband - Up to 6,800Hz
  • Adjustable headband
  • Stereo (binaural versions only)
  • Noise-canceling microphone
  • Digital Signal Processing (DSP)
  • Adjustable ear cushions
  • Swiveling Quick Adjust microphone boom
  • SoundGuard® technology
  • Call answer/end mute and volume controls
  • Two year warranty

To Adjust the Mouthpiece

  1. Hold the receiver securely against your ear with one hand. With your other hand, adjust the clickstop turret and the microphone so that the tip sits two finger- widths from the corner of your mouth. To prevent breath noise, avoid putting the microphone in front of your mouth (see figure 3.1 above).
  2. Carefully bend and shape the boom with both hands as shown in figure 3.2, above. Avoid bending or twisting the boom near the microphone or earpiece.

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