This is a portable ozone generator. ・Operation confirmed ・MODE1-4 switchable ・Small and portable ・Can be used for deodorization, disinfection, and space care Although it is a used item, there is some wear and tear, but there are no problems with the operation. *Please purchase only if you understand that this is a used item. *Please refrain from direct use on the human body (in accordance with the instruction manual). Instant purchase is OK.