The battery life is lot shorter than Bose advertised. User manual should be included.
Response from bose.comBy Bose, Customer Support, September 10, 2025
Thank you for your feedback on the Bose QuietComfort Ultra Earbuds. Just to let you know, here are the details regarding battery life and charging: When Immersive Audio is turned off, the earbuds offer up to 6 hours of battery life. With Immersive Audio enabled, the battery life is reduced to approximately 4 hours. The charging case, when fully charged, provides an additional 18 hours of battery life.
As for charging times, the earbuds take about 2 hours to fully charge, while the case requires around 3 hours. Additionally, a quick 20-minute charge can give you up to 2 hours of use.
A user manual is included in the box, but if you need another copy, you can view or download it here: http://bose.life/3VvRjzT
These buds are outstanding. They come close to my wonderful ultra head phones. They provide a wonderful listening experience for music, sports etc. Love the noise cancelling and immersive sound