【Brand New, Unopened】 Can be attached to the washing machine faucet for use. Quoting from the official website: The Gemmove Washing Machine Multi-Ionizer is designed to ionize the water used in your washing machine. This allows you to clean your clothes more effectively with less detergent. Not only can you save on detergent costs, but you can also reduce your exposure to harmful chemicals found in many laundry detergents.