The ATH-ANC20 QuietPoint Noise-Cancelling On-Ear Headphones block up to 80% of environmental noise and offer outstanding sound quality, comfort and portability. The headphones feature soft ear pads for long-wearing comfort. The detachable cord offers a convenient in-line volume control. Unlike many other noise-cancelling headphones, the ATH-ANC20 audio functions even without batteries or when its noise-cancelling function is turned off. The ATH-ANC20 folds for easy portability and storage and comes with an airline adapter, AAA battery and protective pouch.