This was received from a relative. It's from 2020, but apparently, it was purchased in 2021. I received it when my relative moved, but it won't fit my toilet, so I'm selling it. It was used for approximately three years. I've cleaned it as much as I could as a non-professional. It seems it can only be installed on toilet seats with a separate tank. I have confirmed that it turns on. There is no instruction manual, so please refer to the manual on the website. #Asahi #Toilet #ToiletSeat #Washlet #HeatedToiletSeat