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Up for bid is a Sennheiser SC-30-USB CTRL Monaural Headset w/Call Control with the following specifications:
Test results- Tested speaker, mic, and volume control- all good
Known flaws- Wear typical of use
Included accessories- Unit only
NOT included- Manuals, other accessories
Noteworthy features- Active noise cancelling, adjustable headband, built in microphone, volume control