Moondrop Moon drop Kadenz I purchased these about six months ago and used them two or three times, but they didn't fit my ears and kept falling out, so I've been storing them. Although they haven't been used much, they are still used items, so please refrain from purchasing if you are concerned about this. There is no discoloration. Operation has been confirmed. There is a tear and a fold in part of the box. Please do not purchase if you are concerned about this. Thank you.