High-quality: Bluetooth high-speed connected, answering incoming calls, handsfree talking, superior compatibility, high fidelity stereo surround sound Adjustable headband: Makes it easy to take on the vacation or business trip or to store in your desk drawer for use at work Foldable portable design: The headphones offer not only 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 previous song and next song, pausing 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 headphone ( provides a simple 3.5mm wired connection to a variety of devices ), phone communication, music and phone controls ensure ease of use Support TF card and FM radio