With a convenient detachable cord, no battery functionality, and padded earpieces and adjustable headband, the Audio-Technica ATH-ANC27 Noise-cancelling Headphones are a great choice! Including the capability to eliminate external noise by 85 percent, and with Apple® iPod®, iPhone™ and iPod touch® compatibility, the Audio-Technica ATH-ANC27 Noise-cancelling Headphones deliver the quality you've been missing!