Aerial7 Tank Hello Kitty Headphones Deliver the highest-quality listening experience from your Apple iPodA, iPhoneA, BlackBerryA, or other mp3 player, cell phone or music device. Swivel ear cup with spring return for single-sided monitoring Rubberized, soft touch finish for a premium look and feel. Soft, pliable headband for comfortable extended listening. Thick coiled cable for standard music players, 2) thin straight cable with microphone for iPhoneA, BlackBerryA and other cell phones. Driver Diameter: 57mm