Wireless freedom meets best-in-class sound Freedom. Convenience. The big advantages of wireless headphones. But Bose gives you a better wireless experience all around. Deep, immersive sound at any volume. Clearer calls at both ends of the communication. Seamless switching between two connected Bluetooth® devices, so you'll never miss a call or that movie you're watching. Read on, and discover why these are the best-sounding wireless headphones you'll find anywhere. Deep, immersive sound for music from exclusive technology Clear, natural sound at both ends of a call, even in windy or noisy environments Switch easily between two connected Bluetooth devices (e.g., smartphone and tablet) Up to 15 hours play time with rechargeable lithium-ion battery Lighter and more comfortable than comparable wireless headphones Unsurpassed soundA 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 callsThese versatile headphones are designed to optimize 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, 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. Say you're watching a video on your iPad® and a call comes in on your iPhone®. If you choose to take it, the headphones will automatically pause the video and connect the call. When you end the call, the headphones automatically resume the video and switch back to it. You don't miss a thing.Comfort and durabilityThe 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. 741158-0010