This is the 2023 model, USB-C type. I used it with a case, so there are no noticeable stains, but please be aware that there may be small scratches. I'm selling it because I don't use it at all. Operation has been confirmed, disinfected, and initialized. For hygiene reasons, the ear cover will be removed before sale, so please be aware of this. Returns are not accepted to prevent swapping. Please refrain from purchasing if you are sensitive to used items. Instant purchase is OK.