Operation confirmed. There may be discoloration or damage due to aging. Please check the photos and thank you. Most of the items I am selling are used or old, so there may be scratches, dents, stains, etc. that cannot be fully described. Please understand the above before bidding. If you do not understand, please refrain from bidding. Returns and cancellations for the above reasons will not be accepted. #EcoUliOtherProductsHere #EcoUliHeadphones