Harman Kardon AE headphones feature aluminum-alloy housing for extended bass and true low-frequency reproduction. Optimized 3/8-inch (9-millimeter) drivers deliver extended bass response, wide dynamic levels, high sound-pressure levels and sound clarity at all volume levels. The lightweight AE include silicone sleeves in three sizes for optimum comfort and an Apple three-button remote with built-in microphone for phone calls. A blend of sophistication and simplicity, AE headphones are part of Harman Kardon"s first-ever line of headphones. Now you can take beautiful sound with you wherever you go. Features: Comply foam sleeves Apple three-button remote with built-in microphone Heavy cable and durable plug Premium carrying case Frequency Response - 16 Hz - 20,000 Hz Driver - 3/8 (9mm) Cable length - 4" (1.2m) Remote - Apple three-button (MFI) Accessories - Included silicone sleeves- S, M, L