I had the best results using a heat gun. This is not a biggie. They are so comfortable- but unfortunately you can’t account for calluses. Liked that hoops were adjustable as well. ノイズ除去はそんなに効果はないと思います。音質も可もなく不可もなく普通に良い程度ですが、耳が疲れないので悪くは無いのでしょう。形状が自分の耳に会合っているところが一番気に入っています。なんだかんだ言っても結果的には長く使っていきたいと思えるイヤフォンに出会えてよかったです。 As for noise cancelling, it will not eliminate background / ambient noise. These more than delivered. Man muss das Headset nicht immer ablegen, wenn man nicht spricht. Also, you do not need 2 people to assemble. But as you can imagine, it becomes worthless with wind noise on a windy day or if you are bike riding.