タイプ···カナル型 接続タイプ···有線 カラー···ホワイト 特徴···ノイズキャンセリング qc20 前の方が飛行機で数回使用との事 私は1.2回数時間程度使用しました。 動作に問題はありませんが元々所持しているもので満足しているのでお譲りします。

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