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Tristar: How to Adjust the Mouthpiece for Noise Canceling Models

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To adjust mouthpiece for Tristar H81N noise canceling model

To adjust mouthpiece for noise canceling models:
  1. Bend and shape the boom carefully with both as shown in the image below. NOTE: Avoid bending or twisting the boom near the microphone or earpiece.
  2. Position the boom so that the microphone sits two finger width from the corner of your mouth.
  3. Ensure the front of your microphone faces your mouth. If necessary, twist the microphone slightly so it's in the proper position. NOTE: Do not use forceful twisting motions or turn the microphone completely around.