High-Quality Bluetooth High-Speed Connected, Answering Incoming Calls, Handsfree Talking, Superior Compatibility, High Fidelity Stereo Surround Sound. Foldable Portable Design. This foldable portable design makes it easy to take along on that next vacation or business trip or to store in your desk drawer for use at work. Adjustable Headband. The headphones offer not only a sleek style with a slim profile but also an adjustable contoured headband, it allows you to get a great position on your head. Easy to controls your headphones. Can freely control the switch of the previous song and next song, pausing a song, answering calls, ending calls, refusing the incoming call, dialing the last number, volume control. Works with or without Bluetooth capability. Not only wireless also can be used as wired headphones (Provides a simple 3.5mm wired connection of a variety of devices).