The noise cancellation function is most effective for low-frequency (bass) noise, such as on planes, trains, offices, and near air conditioners, but not all sounds are completely eliminated. In quiet environments, the noise cancellation function is not recommended.
Make sure noise canceling is turned on.
Adjust the earbuds position to fit your ears.
Noise canceling is effective in the low frequency range, such as on airplanes, trains, offices, near air conditioners, and is less effective for higher frequency sounds, such as human voices.
Replacing the eartips:
If the eartips don't fit your ears, the noise cancelling effect won't be good. Please choose the eartips that fit snugly in your ears. When replacing the eartips, try them on in descending order of the size to find your perfect one.
Note: The best eartips for left and right ears may not be the same.
The noise cancellation effect may not be noticeable in very quiet environments.
Depending on how the earbud is worn, noise cancellation may vary or beeps (feedback) may be heard. In this case, take off the earbuds and put it on again.
When using the earbuds in a train or car, noise may occur depending on street environments.
Mobile phones can cause interference and noise. If this happens, keep the earbuds away from the mobile phone.
Do not cover the earbuds with your hands. The Noise Cancelling function or Ambient Sound Mode may not work correctly, or a beeping sound (feedback) may occur. In this case, release your hand from the earbud microphone.