ANC (Listening Noise Blocking Ability) is imperceptible, but that's the case with most headphones I've tried. It will not be blocked like an ANC bill. ENC (Recording/Call Noise Blocking) is pretty good. It was able to completely remove the noisy fan and, on testing, mostly removed the metronome and moderate voice behind me. In music, it has no problem with full range, including sustained bass. The battery could last a bit longer, but that might be usual for the form factor. I highly recommend it for the price.
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