Nokia Purity Pro Wireless Stereo Headset by Monster. - Use active noise cancellation

Active noise cancellation (ANC) reduces background noise, so you can enjoy high quality audio also in noisy environments. As you can listen at a lower volume, ANC helps protect your hearing.

When you put your headset on, the earpiece proximity sensors switch ANC on automatically. When you take the headset off, ANC switches off.

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