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  1. Sennheiser PXC 550 Wireless BT NoiseGard Adaptive Noise Cancelling Headphones

    Tested & Working Headphones Good Condition Boxed Complete with Contents. Headphones supplied with Manuals, USB Cable, Audio Cable, In-Flight Adapter &Carry Case as Pictured. Noise cancelling is most effective for repetitive low level frequencies (like engine noise) but will not block higher level frequencies (like people talking) as much as these frequencies are needed to allow sound to work in the headphones.

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  2. Job Lot of 10x Faulty Sennheiser PXC 550 Wireless BT Noise Cancelling Headphones

    Sennheiser PXC 550 Wireless BT NoiseGard Adaptive Noise Cancelling Headphones Product Code 506514. Right Ear Not Working. Noise cancelling is most effective for repetitive low level frequencies (like engine noise) but will not block higher level frequencies (like people talking) as much as these frequencies are needed to allow sound to work in the headphones.

    eBay

  3. Job Lot of 10x Faulty Sennheiser PXC 550 Wireless BT Noise Cancelling Headphones

    Sennheiser PXC 550 Wireless BT NoiseGard Adaptive Noise Cancelling Headphones Product Code 506514. Left Ear Not Working. Noise cancelling is most effective for repetitive low level frequencies (like engine noise) but will not block higher level frequencies (like people talking) as much as these frequencies are needed to allow sound to work in the headphones.

    eBay

  4. Job Lot of 10x Faulty Sennheiser PXC 550 Wireless BT Noise Cancelling Headphones

    Sennheiser PXC 550 Wireless BT NoiseGard Adaptive Noise Cancelling Headphones Product Code 506514. These Units Do Work When attached via Audio Cable to Another Device. Noise cancelling is most effective for repetitive low level frequencies (like engine noise) but will not block higher level frequencies (like people talking) as much as these frequencies are needed to allow sound to work in the headphones.

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  6. Sennheiser Century Sc 665 Usb Headset - Black & Silver, Black,Silver/Grey

  7. Sennheiser Usb-Ed Cc 01 Ms Headset Cable - 1.61 M

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