Water filter built-in faucet. This was installed in my new home purchased in January 2024. I used it for two weeks before replacing it with a different faucet. I wasn't using the water filter function of this faucet, as I had a separate water filter installed. I will include one brand new cartridge, so you can use it right away. Currently, it's sold on Rakuten Ichiba for around 21,999 yen for the faucet body and 2,300 yen for the cartridge, so this is a bargain. Although it's a beautiful item, it is a used item that has been stored by a private individual. I think there may be some scratches and dirt. Please consider this before purchasing.