Panasonic Tap Water Purifier TK-CJ14-W (White) The cost-effective tap water purifier, TK-CJ14-W, can be used for approximately one year and is designed for easy filter replacement. - Model Name: TK-CJ14-W - Usage Period: Approximately 1 year or 4000L - Cost Performance: Approximately 2.3 yen per liter The box has been opened once, but the product has never been used and is in the same condition as when it was purchased (new).