☆HIKARI MIRAI☆ Hydrogen Water Generation Tumbler (TB500W) This product is a tumbler that injects hydrogen gas into beverages to generate hydrogen water. It is used by connecting it to a hydrogen gas generator. (Please refer to the usage image on the 14th image) Please note that this item cannot be used on its own. Purchased around April of this year, R7 (2025), and used by connecting it to a RITA AIR hydrogen generator. Used about 3-4 times, but I purchased a separate hydrogen water purifier, so it became unnecessary and has been stored at home. (After each use, it was washed and thoroughly dried before storage.) Power-on operation has been confirmed. There are no noticeable stains or scratches. Please understand that this is a used item due to home storage by a non-professional. Purchase price: 15,000 yen