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Bose QuietComfort Ultra Headphones

Sold from 2023 – present

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Product will not turn on

If your product appears to be receiving power but won't power on as expected:

Try charging your product for a few minutes.

If the battery level is very low, your product might go into a battery protection state. If this happens, voice prompts might not sound and alert you of the low battery status. Try charging your product for a few minutes, then try again.

Check for and install any available product updates.

On a computer, visit btu.bose.com and follow the instructions to ensure your product has the latest features and enhancements. See Updating the software or firmware of your product.

Determine if the LED indicator is flashing red and white.

If the LED indicator is flashing red and white, see: Battery LED status indicator is flashing red and white.

Reset your product.

Much like rebooting a smartphone, your product might need to be reset on occasion to correct minor issues. For more info, see Resetting your product.

Check that the USB charger meets the power requirement of your product.

On the USB charger, there will be text that indicates the amp (A) or milliamp (mA) rating of the charger. This rating varies among chargers – including those supplied with different models of Bose products. The closer the amp rating of the charger is to the maximum amp rating of the product, the more quickly the product will recharge. If the amp rating of the charger is too low, the product may recharge slowly or not at all. Refer to the specifications indicated on the product or within it's owner's guide on for details.

Some products require minimum of 1 amp of current in order to recharge. Many USB ports on a computers can only provide a maximum of 0.5 amps of current. Be sure to use a safety-agency-approved power supply that meets local regulatory requirements (e.g. UL, CSA, VDE, CCC).

Try a different USB cable.

Try connecting your product with a different USB cable to determine if there is an issue with the first cable.

Your product may need service.

If the steps provided do not resolve your issue, your product may need service. Follow the link below for more information on how to service your product. Depending on your product and region, you will be provided a contact number or the ability to setup service online.

Click here to start service

To power your headphones on or off:

Power on

Press and release the Bluetooth/Power button. A tone and a voice prompt announces the battery level. The status light glows according to the current charge level.

Please note: It may take 3-5 seconds after pressing the power button to hear any a voice prompts.

  • When you power on the headphones and hear the tone, the audio is personalized to your ears for the best audio performance
  • The headphones must be on your head for the voice prompt to play.

Power off

The headphones feature two off states Sleep and Off.

  • Sleep conserves battery but can be woken by placing them on your head, or pressing any button - either Bluetooth/Power, Multi-function, or Volume strip.
  • Off uses no battery and can only be woken by pressing and releasing the Bluetooth/Power button.

To turn the headphones Off, press and hold the Bluetooth/Power button until you hear a tone. The status LED on the left earcup will flash white twice. When the headphones are powered off, noise cancellation is disabled.

Auto off

Sleep - The headphones conserve the battery and go to sleep when you remove them from your head and they are not in use for 10 minutes (5 minutes from Software Version 1.6.7 onwards).

The headphones power Off completely after 24 hours of inactivity (by default) when in Sleep mode.
You can adjust this delay in the Bose app from the Settings menu >Power> Auto-Off and choose between 5, 20 and 40 minutes, 1, 3 and 24 hours or never.
 

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