WF-1000XM4 LR set for sale. This is a used item, but the batteries (genuine Z55H) have been replaced with new ones. The item has been tested and cleaned. You don't have to worry about the battery degradation that is common with this model. Please check the photos for any scratches or stains. We have confirmed the operation, but if there are any initial defects, we will accept returns if you contact us before leaving feedback. This is for those who have only the earphones broken, have bad batteries, or have lost them. The version is the latest 2.3.1. The charging case is not included, so please purchase it separately if you need it.