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.
Notice:
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.
降噪功能最有效的是針對低頻（低音）噪音, 如飛機上、火車上、辦公室、空調附近，但是並不是所有聲音都完全消除.在安靜環境，不推薦使用降噪功能。
確保降噪功能開啟。
調節耳墊位置以適合您的雙耳。
降噪功能在低頻範圍中有效，如飛機上、火車上、辦公室、空調附近，而對較高頻率的聲音沒那麼有效，如人的聲音。
更換耳塞 :
如果耳塞不適用您的耳朵，降噪效果會不好，選擇耳塞並緊密貼合耳朵，至少讓您聽到每個單位的環境聲音。更換耳塞時，按耳塞大小從大到小依次試戴。
注意: 左右耳最適合的耳塞可能不一樣。
注意:
降噪效果在很安靜的環境下可能不明顯，或可能聽到一些噪音。
視佩戴本耳機的方式而定，降噪效果可能有所不同或可能會聽到嗶嗶聲（反饋）。在此情況下，請摘下耳機並重新戴上。
在火車或汽車中使用耳機時，根據街道狀況，可能會發生噪音。
移動電話可能導致干擾和噪音。如果發生這種情況，請將耳機遠離移動電話。
請勿用手蓋住耳機麥克風。降噪功能或環境聲音模式可能無法正確運作，或可能發出嗶嗶聲（反饋）。在此情況下，請將手放開耳機麥克風。