The reason for the discount is that it's an old design, so it's an older item. It's priced lower accordingly. Please purchase only if you understand and accept the condition. Hydrogen + Silicon generating ceramic. You can have beautiful intestines and live a life filled with intestinal flora. Simply put this product in the water you always drink to make high-concentration hydrogen water of 1.6ppm. Furthermore, you can also get mineral silicon, which is attracting worldwide attention. No need to replace troublesome water purifier filters. Completely removes chlorine. Even if you heat or freeze the resulting hydrogen water, the hydrogen is less likely to escape. Materials used: Chlorine-removing mineral ore, hydrogen-generating ceramic, platinum, silver, silicon, zeolite Body material: Polyethylene resin Body size: Diameter 20mm x 105mm Please refrain from purchasing if you are looking for a perfect item, as it has been stored at home. This item has been handled by other people. Please refrain from purchasing if you are sensitive to such things. It will be shipped in simple packaging.