SANWA SANWA RW-1 Gensui (Reduction Water) *Power on and button operation confirmed only. Functionality has not been verified, so this item is sold as junk. All button operations respond, and the lights illuminate normally. Original box and instruction manual are not included. There is noticeable discoloration due to aging, but it was covered with plastic wrap from the beginning, so it is not discoloration from cigarette smoke or oil stains. (Non-smoker) There is no damage such as cracks. Hoses are also included, but please consider them as extras. Cartridge needs replacement. Due to being a junk item, we cannot accept any claims, cancellations, returns, or exchanges after purchase. Please understand this beforehand. We cannot respond to comments asking for price reductions, so please understand this beforehand.