Bose QuietComfort Ultra In-Ear True Wireless Earbuds - Black

Resync the earbud connection. 

1. Place both earbuds into the charging case. Keep the lid open. The earbud status light will illuminate when the earbuds are inserted into case. If the status light does not light up, press downward on the buds to ensure they are making a solid connection with the charging pins.
2. Close the lid on the case.
3. When the status light on the front of the case stops flashing, open the lid, remove just the right earbud, and place it into your right ear. You should hear the welcome tone.
4. Place the left earbud in your ear. You should hear the welcome tone and can continue using your product.

Be sure the earbuds are being worn properly: Proper fit is important for product comfort and performance. If the earbuds do not fit properly or the orientation is incorrect it could lead to poor audio or mic performance.

Try playing different types of media: Different media types might produce different quality sound. For example, Podcasts, music stored locally on your phone, MP3s, streaming music services (Spotify, Pandora), videos on your device or stored in the cloud, etc. can all vary in quality. Try different media to determine if the issue is specific to certain media.

Excessively noisy environments such as airplanes taking off, concerts, emergency sirens, and construction zones (among others) can overwhelm the microphones used to monitor external frequencies (part of the ANC technology) causing the headphones to crackle or distort.
Be aware, this can also happen in Quiet and Aware mode.

For example, have you ever held your phone too close to your mouth or talked loudly during a phone call? When you do, your voice can sound distorted to the person you are talking to. When you move your mouth away from the phone and talk at a normal level, the sound of your voice returns to normal. This is similar to what is happening when exceptionally loud noises occur in the environment where the headphones are used.

It is important to know these loud environments will not damage the headphones and there is no lasting damage to the product. If you would like to reduce the amount of times this happens we recommend doing your best to move away from the loud noises. For example if you are flying choosing a seat further away from the engines will reduce this effect.

1. Insert the earbud so the eartip gently rests at the opening of your ear canal. Each earbud is marked with either an R (right) or L (left).
2. Slightly rotate the earbud back until the eartip creates a comfortable seal at your ear canal and the stability band rests against your ear ridge.
3. You may need to rotate the earbud back and forth for the eartip to create a  comfortable seal. However, rotating it too far back or forward may impact audio and microphone sound quality.
4. Check the fit. 
5. Repeat steps 1 – 3 to insert the other earbud.

Checking your fit

• Proper fit - The eartip gently rests at the opening of your ear canal to create a comfortable seal.
• Background noise should sound muffled before the earbuds are powered on and noise cancellation is active
• Too much pressure - The eartip feels uncomfortable and squished in your ear canal
• Too loose - The eartip rests too deep in your ear canal, feels loose in your ear, or falls out when you move your head

Please follow these instructions in the following order:

Clear out Bose Music App:

1. Open the Bose Music app and tap on the "Account" icon in the upper-right  corner.
2. Select "Manage Products."
3. Tap "Edit."
4. Select the Bose earbuds.
5. Tap "Delete."
6. On the following screen, tap "Remove." 
7. Close the Bose Music App

Clear out the phone's Bluetooth history:

1. Go to your phone's Bluetooth settings menu
2. Clear all mentions of the Bose earbuds from the Bluetooth device list, including any duplication with "LE" in the name. Clearing can vary by device. Look for "Clear," "Unpair" or "Forget."

Clear out the product's Bluetooth pairing list and reconnect to Bose Music App:

1. Plug the charging case into a USB wall charger (not a computer or laptop).
2. Place both earbuds into case. Keep the lid open. The earbud's LEDs will light up when buds are inserted into case. If the LED does not light up, press downward on the buds to ensure they are making a solid connection with the charging pins
3. With the case open and earbuds inside, press and hold the Bluetooth button on the back of the case for 30 seconds (The earbuds status light will blink blue while holding the button). Then the status light will blink white 2 times, slowly blink blue, and then turns off.
4. Release the button. Earbud status light blinks white 5 times, then slowly blinks blue. The product is now in pairing mode and ready to connect.
5. Open your Bose Music App and follow the onscreen instructions to connect your Bose earbuds.