I am selling this humidifier because I purchased a new one. There is some water scale on the inner lid, but it does not affect its use. Please check the photos. I have also cleaned the other parts with citric acid, so I think it is relatively clean. Operation has been confirmed. Everything in the photos is included. Everything is included except for the outer box, so it can be used immediately. I will pack it carefully with bubble wrap and cardboard for shipping. Please note that I will not be able to respond to any issues after the evaluation is complete.