Sony-MDRZX310-AE-Hi-Fi-Headphones-Sony-MDRZX310B-AE-p-These-lightweight-headphones-from-Sony-have-a-folding-design-to-give-you-the-ultimate-in-music-mobility-They-will-fit-neatly-in-your-bag-or-pocket-to-be-readily-at-hand-whenever-you-want-to-listen-to-your-favourite-sounds-p-Sony-MDRZX310B-AE-Hi-Fi-Headphones-Black