Powerful Audio to keep you movingwhen in the middle of a strenuous workout, earbuds need to stay in place. That's exactly what Bose designed their stay hear+ sport tips to do. The tip is formed in a unique shape to create a gentle seal at the entrance of the ear canal, which helps improve audio performance. There’s also an extended flexible wing that uses the Ridge of your ear for support and provides significantly improved stability—no need to force them in. The soft, silicone material and rounded profile delivers an unmatched combination of comfort and stability for long-term wear. And it should: Bose developed more than half a dozen prototypes based on original stay hear+ tips to ensure we had the best solution.bluetooth & NFC pairing keep you tangle–freepairing black sound sport wireless headphones to your Bluetooth device is simple. If your phone is nfc–enabled, it only takes a quick tap between your phone and the inline remote. Take calls with the inline remote, as well as control volume and skip or pause tracks. You’ll find the reliable performance and convenience keeps the focus on your sport or workout, not your headphones.superior audio quality turns up the intensityyou rely on music to push you further and drive you through the toughest workouts. Sound sport wireless headphones in black deliver, with the clear, full–range sound Our wired headphones have long been known for. And now, volume optimized EQ provides a noticeable improvement to the sound quality at any volume.sweat– and water-resistant designwhether you’re sweating it out in the gym or braving the elements for a run, These headphones will keep you going every step of the way. The acoustic ports in each earbud are positioned to resist sweat and weather, and the hydrophobic cloth keeps moisture out.