This listing includes the main unit, a stop valve, and a cartridge. Purchased in 2023 and used for about a year and a half. Selling because it's no longer needed due to a move. The current cartridge is due for replacement, so please use the new cartridge. The new cartridge box is crushed, but the cartridge itself is new and unopened. There is some slight staining on the hose, but otherwise, it is in clean condition with no noticeable scratches. Please prepare a branch adapter, etc., according to your environment for installation. I confirmed that the power turns on just before listing. Please understand that this is a used item and consider accordingly. ※ Due to the nature of the product, there may be water droplets remaining inside, please understand. Product: Panasonic TK-AS31 White The model number of the stop valve is unknown.