Unsurpassed sound A better wireless headphone experience begins with what you hear. And SoundLink around-ear wireless headphones sound better than any in their class. A combination of TriPort technology and Active EQ delivers sound that's crisp and powerful at any volume. So you can be truly moved by your music as you move with it, untethered. Clearer calls These versatile headphones are designed to optimise your phone calls, too. An advanced microphone system with HD voice and adaptive audio adjustment provides clear calls even in windy or noisy environments. And enhanced sidetone makes your voice sound more natural on the other end, as if you weren't wearing headphones. Easy connecting. Seamless switching. The latest Bluetooth technology lets you easily connect to your mobile devices with seamless audio/video sync. And you can stay connected to and switch between two devices at a time. So, if you're watching a video on your iPad and a call comes in on your iPhone, the headphones will automatically pause the video and answer the call. When you end the call, the headphones automatically resume the video and switch back to it. Comfort and durability The headphones are engineered for your busy life with impact-resistant materials, glass-filled nylon and corrosion-resistant stainless steel. With soft ear cushions and a contoured headband, they're lighter and more comfortable than other comparable wireless headphones, so you can enjoy them all day long. When you're done listening, you can fold them flat for storage in their compact matching case.