Thank you very much for viewing. This is the ELECOM HDMI 4K Audio Separator Optical Digital ASC-HDAV121BK. After purchasing new, I never had a chance to use it, and it has been stored in a dark room in its original box. There is no noticeable deterioration, and in my opinion, it is in the same condition as new (I am in a non-smoking environment). All accessories are included, including the original box. If you are looking for one, please consider this opportunity. Thank you very much. *We do not accept price negotiations such as discounts.