BOSE QC-25 Headphones with Dynamic or Electret Icom IC Microphone REFURBISHED AND MODIFIED by HAM-SET ®. -MICROPHONE: IC ELECTRET. That's why I thought of modifying the famous, lightweight, and comfortable QC25 Bose headphones, equipped with a truly effective unique Noise Cancelling system, by adding a professional quality boom microphone you can choose between dynamic or electret, both compatible and versatile.
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