Thank you for viewing. I am selling this because I won't be using it due to timing. The color is black. This is a direct store exclusive color. cado's first auto-clean humidifier [Heat sterilization*1] Refreshes the water tank automatically, providing a safe design that fills the room with clean mist. [No cleaning required for one season*2] Keeps it clean and easy for 90 days without daily washing. [Electricity bill 1/6*3] An ultra-energy-saving design that heats only the necessary parts, making it friendly to your household budget. Equipped with the unique hybrid humidification technology "Clean Heat" (patent pending), which combines ultrasonic and heating methods. By efficiently heating only the necessary parts, it achieves both cleanliness and energy saving. [Clean Heat] cado's unique hybrid humidification technology that combines the energy-saving properties of ultrasonic humidification and the cleanliness of heating humidification. It automatically performs heat sterilization (low temperature of about 70°C) once every 12 hours to refresh the water in the tank. *1 Evaluation institution: Kitasato Environmental Science Center, General Incorporated Foundation Report No.: Kitaseihatsu 2025_0067 / Compliant with Japan Electrical Manufacturers' Association's voluntary standard HD-133 "Evaluation test of suppression performance against mold and bacteria in humidifier water" / When the logarithmic reduction value is 2.0 or more, it is judged that there is suppression performance against mold and bacteria. / Removal performance evaluation test in the humidification water tank using cado humidifier STEM500H (water volume approx. 400cc). / Operation in automatic heating mode. / The test was conducted in a test safety cabinet and is not in a real-use space. / Not all bacteria can be sterilized. *2 Test conditions: 8 hours a day on weekdays (humidification amount: low) + heating operation twice a day (approx. every 12 hours) / The water in the water tank after the heating operation is collected once a day and cultured in a dedicated medium for 24 hours to check the number of bacteria. (One season / 90 days) / This is the result of our own tests, and cleaning is required if dirt or slime adheres depending on the usage environment. *3 ・Electricity rate unit price set as a guide by the Fair Trade Council of National Household Electrical Appliance Products: 31 yen/kWh ・Power consumption when operating a general heating humidifier (power consumption: 410W) for 8 hours a day: 3280W ・Power consumption per day when operating STEM 500H in manual high mode (power consumption: 32W) for 8 hours a day, and heating operation (power consumption: 143W, approx. 2 hours twice a day): 542W Thank you very much! ^_^