I've had it for less than a month, and I've only used it indoors, about once or twice a week for an hour at a time. Bluetooth connection and button operation are both working perfectly. I've taken good care of it, so there's no dirt or anything, but there's one scratch. When I was taking off the headphones, I tried to take the right earcup off by hand and scratched the leather part with my nail (see the blue circle in image 3). It's not noticeable depending on the angle and lighting. The same goes for the opposite. Other than this scratch, it's clean, and the accessories include two types of cables, a headphone case, and the instruction manual. Everything is included as it was when I bought it. The sound quality is top-class among wireless headphones. I want to sell it to someone who will take good care of it. 【#WirelessHeadphones #Headphones】