Please kindly see your online instructions on below link.
When it comes to noise cancellation, we’re not just best in class. We invented the category. With QuietComfort 35 headphones, there’s no noise to get in the way of your music, and no wires to get in your way at all. We put years of research into headphones that deliver true listening freedom. Easily connect your devices with Bluetooth or NFC pairing. They provide balanced audio performance no matter how noisy your commute is, and clear calls even on a bustling, windy street. With 20 hours of wireless battery life, you can listen all day; and the fit is light and comfortable enough for it, too. And for easy management of your devices, use the free Bose Connect app.
We offer a 60-day sellers warranty for manufacturing defects.
Authenticity can be easily checked by connecting the earphone to the Bose App.