Thank you for viewing. This is a set of brand new, unopened BOSE QuietComfort Ultra Earbuds (2nd generation) + genuine case (beautiful condition). This is a domestic genuine product that has been replaced with a new one by BOSE support in October 2025. Warranty until around April 2026. The earphones are brand new and unopened, so the operation has not been confirmed. In the unlikely event of an initial defect, please use the manufacturer's warranty. The genuine case is from the previous model, but it looks like new and is in very clean condition. ✦ Instant purchase OK ✦ Will be carefully packed and shipped ✦ First come, first served