Bose QuietComfort Ultra Earbuds - Black

Refurbished means the earbuds have been previously owned, returned, and then thoroughly inspected, tested, and restored to full working condition by qualified technicians. They function like new, but may have minor cosmetic imperfections. They offer a great way to experience premium audio at a reduced cost.

You can activate Immersive Audio through the Bose Music app. Once connected, navigate to the sound modes or settings within the app and select the Immersive Audio option. Some touch controls may also be programmable for this feature.

Yes, these earbuds typically support single-earbud use. You can leave one in the charging case while using the other for calls or audio.

Info needed: The product description does not specify an IP rating for water or sweat resistance. It is generally advised to avoid exposing them to excessive moisture to prevent damage.

Info needed: Specific battery life details are not provided. Battery performance can vary depending on usage, such as volume levels and the use of noise cancellation or Immersive Audio features.

Info needed: Warranty terms for refurbished products can vary. Please refer to the specific seller's warranty policy or Bose's official refurbished product warranty information for details on coverage and duration.

Ensure both earbuds are charged. Turn off and on your device's Bluetooth. Forget the earbuds in your device's Bluetooth settings and try pairing again. If issues persist, try resetting the earbuds via the Bose Music app or by holding the Bluetooth button on the case.

Check that you have a secure and proper seal with the ear tips. Experiment with different ear tip and stability band sizes to find the best fit. Ensure noise cancellation mode is activated through the Bose Music app or touch controls. Environmental noise type can also affect perceived cancellation.

Verify the earbuds are properly seated in your ears for a good seal. Check your device's audio settings and ensure the volume is adequate. Disconnect and reconnect the earbuds. If streaming, check your internet connection or try playing local audio files. Clean any debris from the earbud nozzles.

Try all combinations of the included ear tips and stability bands. The correct size creates a comfortable, secure seal without pressure. Twist the earbuds slightly backward into your ear until they feel snug and stable.

Activating Immersive Audio and maximum noise cancellation can consume more power. Reduce usage of these features if longer battery life is needed. Ensure the earbuds are fully charged before each use. Info needed: Specific battery life expectations for different modes.