I've been using this for about a year, but I'm selling it because I bought a different one. All necessary parts are included. There is some adhesive residue from tape on the back of the main unit, and it's a bit sticky. Other than that, it's in relatively good condition. ※ There are no smokers in the household. It's a very good product. I think it can still be used sufficiently, but please understand that there is no warranty as I don't have the original receipt. Deodorizing and Disinfecting Air Purifier QAIS-air- (Quais Air) 04A1J-OW Off-White