This is a single-item water generator for producing Pi-water. It was explained that by placing tap water in a non-metallic container with this item and letting it sit for several hours, 5 liters of Pi-water would be produced. There are no instructions or box. The water becomes milder. Individual results may vary. Thank you for your understanding. *Price reduced from 12,000 yen to 9,000 yen. Size: Approximately 98mm x 73mm x 40mm - Material: Stainless Steel - Design: Perforated Top and Sides - Function: Water Filter Accessory - Warranty Number: 01817 Thank you for viewing this page from among the many listings.