AKG Ultra Small in-Ear Headphone, Red (Y23U Red) Signature akg-quality sound in an incredibly small, light in-ear headphone Lightweight, durable design Universal 3-button remote/mic that is fully compatible with both android and iOS Soft silicone sleeves in three sizes (s/m/l) Easy-to-store pouch for on-the-go travel Connectivity technology : Wired