For sale due to replacement. BOSE QuietComfort Ultra Earbuds (first generation) ✔︎ Tested and working (Bluetooth connection, sound output, and ANC operation OK) ✔︎ Includes earbuds and case (original charging cable can be included if needed) ✔︎ The case cover was used, so there are some minor scratches and dirt on the cover from use, but I think the main unit doesn't have many scratches. (Please check the photos) ※ Noise canceling and external sound capture functions available ※ Customizable with the dedicated app ※ Accessories: See photos ※ No outer box or instruction manual. ※ Will be shipped after pairing is解除 and initialization. I don't feel any deterioration compared to when I bought it new. I think it's a good product with no battery degradation. Please purchase if you understand that this is a used item.