Sharp Hybrid Humidifier Because it's an evaporation type, it doesn't emit hot steam. Adjustable humidity. Energy-saving function. Other features are also included. The tank has a large capacity, so depending on the usage environment, it can operate continuously for more than 5 hours without refilling. It was used for 2 seasons (2 years) and has been stored indoors since then. As shown in the images, there are no noticeable stains. The filter was used for about two weeks after being replaced with a new one, and then cleaned with OxiClean and stored. Operation has been confirmed. Instruction manual is not included. For those who understand that this is a used item.