Thank you for writing in, and sorry to hear about the experience you had. Does this happen when you are listening to music or during phone calls? To clarify, the headphones were designed for single earbud usage while on phone calls.
Many times we see this is when there is interference between the headphones and the source device. If you experience this, ensure the source device is within range of the earbuds and check for any other wireless or Bluetooth devices nearby. You may also want to try clearing the paired device list in your headphones and re-pair your device.
Also, if you notice the left earbud turning off, try pressing the Bluetooth button wake it.
Let me know if you have any other questions.
Thank you again,
Mohsin - Community Support
@Alan Duran thank you for getting back, and I appreciate that you were able to perform the troubleshooting steps. I understand this was your second set, and that is unusual for the issue to occur twice. My best recommendation would be to contact your local Bose Support directly for further assistance.
Here is a link for getting contact information. Just select your region, and kindly scroll down to where you "contact us".
Let me know how everything goes for you.
Thank you again,
I just purchased my earbuds yesterday. They both worked when I tested them for 3”, but today when I went out on a mountain bike ride the left one stopped working right at the start and never reconnected for 60”. I was using my new Garmin Vivoactive 3 Music watch, so I had no ability to receive a phone call (Apple Watch). If this does it again, I am returning them, which is too bad because they sound great, are comfortable and stay in place. Any helpful hints, welcome.....
I am having the same issue. I just purchased these less than a week ago and I can't get the left earbud to link. It's charged and docking it in the charger does not produce a desired result. Also redocking it in the charger does not seem like a sustainable fix to this problem. I don't carry the charger everywhere I go when I'm using them.