I used this for several years after purchasing it, but it has been stored long-term since then. I confirmed it was working fine before listing it. I also cleaned it with citric acid, but some white residue remains. There are no noticeable scratches or stains on the exterior, but please refer to the images to make your judgment. - Brand: Zojirushi - Year of manufacture: 2008 - Model: EE-LG35 - Water tank capacity: 2.2L - Humidification capacity: 350ml/h [Included items] Humidifier body Power cord Instruction manual