The SwitchBot Smart Humidifier uses an "evaporative" method where water naturally evaporates, preventing over-humidification. With a humidification rate of 750ml/h, it can evenly humidify a 21-tatami mat living room. Power consumption is approximately 15W, making it energy-efficient and economical to use all day. Furthermore, because it humidifies using only airflow without a heater, power consumption is low, and electricity costs are reduced. When linked with a smart speaker, it can be operated with voice commands. On a dry winter night, there's no need to get out of your warm futon or kotatsu, or to search for your smartphone. You can also check the humidifier's operating status and control it anytime, anywhere with the app. If you set a scheduled operation to match your return time, you can come home to a room adjusted to a comfortable humidity. Even if you've left it on when you go out, you can turn it off remotely. Furthermore, you can save on electricity costs by using the timer function. I am selling this because I used it for a week, but it doesn't fit the size of my room, so I am replacing it. The outer box has been disposed of, so it will be packed in a separate cardboard box. Thank you for looking.