Thank you very much for viewing. I am selling the ELECOM HDMI 4K Audio Separator Optical Digital ASC-HDAV121BK. After purchasing it new, I never had the opportunity to use it, and it has been stored in its original box in a dark room. There is no noticeable deterioration, and in my subjective opinion, it is in the same condition as new (I am in a non-smoking environment). All accessories are included, including the original box.