This is a new item. The cartridge is already set, so you can use it as soon as it arrives. Please check the types of faucets that can be installed in the photos. [Product Condition] ・New [Product Features] "Soryu-sui" is a revitalized water that maximizes the reduction power and self-cleaning ability through patented technology. While retaining the mineral content, it removes residual chlorine, impurities, and trihalomethanes (carcinogens) that cause odors, making it delicious to drink. Safe and delicious water is also ideal for cooking. It is more economical than buying bottled water and helps reduce environmental waste. We recommend the eco-friendly "Soryu-sui" because water is essential every day. ・Water purifier that can be directly attached to the faucet ・Easy installation without construction ・Space-saving compact design ・Easily purify water for daily drinking and cooking [Included Items] ・The accessories at the time of purchase are included as they are (Main unit, adapters, instruction manual, etc.) [Installation] The types of compatible faucets are detailed on the back of the box. Please check the shape of your faucet at home before purchasing. *Some faucets may require a separately sold adapter. Cartridge replacement目安: 3 months (Approximately 27L/day, varies depending on the water quality and region) Free Science Co., Ltd. Household faucet-mounted water purifier Retail Price: ¥19,800