Logitech UE 4000 Headphones - Black (Discontinued by Manufacturer) UE Sound Signature: Pure, undiluted, immersive sound thats rich, clear and perfectly tuned Grab-and-go design: Compact, durable and easy to pack in your bag with included zippered travel pouch Lightweight on-ear comfort: Plush memory-foam cushions, soft-as-leather surfaces and adjustable headband 2-person sharing splitter: Share music from your iPod, iPhone or iPad with two jacks for your headphones and a friends On-cord music/call controls and mic: Adjust volume, pause, answer/end calls without touching your smartphone or tablet. (Functionality may vary on non-Apple devices.) Connectivity technology: wired